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Old May 26th, 2010, 10:14 AM   #41
kazam58
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Name: Andy
Location: Essex Jct, VT
Join Date: Dec 2008

Motorcycle(s): '08 Ninja 250R

Posts: 330
YEAR: 2008

INTAKE MODIFICATIONS: Snorkel removed, K&N Stock replacement filter

EXHAUST MODIFICATIONS: Sportisi VR Full System

JET KIT OR STOCK? Jet Kit

BRAND OF JET KIT? Dynojet Stage 2

MAIN JET: #98

Pilot Jet: Stock (38)

NEEDLE AND CLIP POSITION: 4th from top with 2 washers on top

MIXTURE SCREW SETTINGS: 2.5 turns out

ELEVATION: 106 meters (347 feet)

MISCELLANEOUS INFORMATION ABOUT YOUR BIKE’S JETTING SETUP: Switched the needles from the 3rd clip position to the 4th and got my midrange back; now it pulls like crazy everywhere. The low end could probably use some tuning, but it works great like this. The Kleen Air System has to go though, I'm getting popping all over the place.
__________________________________________________
'08 Blue - Seat Cowl - A-Tech CF Fender Elim - Zartan's Exhaust Hanger - Dynojet Kit - Drilled Slides - Snorkel Removed - K&N Drop In Air Filter - Tech Spec Grips - Sportisi Windscreen & VR Exhaust

Last futzed with by kazam58; May 27th, 2010 at 03:23 PM.
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Old June 26th, 2010, 11:42 PM   #42
hoodadooda
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Name: Aaron
Location: Henrico, VA
Join Date: May 2010

Motorcycle(s): 2009 Kawasaki Ninja 250 (sold), 2006 Daytona 675 in Tornado Red (sold), 2007 Ninja 650

Posts: 272
YEAR: 2009

INTAKE MODIFICATIONS: De-Snorkeled

EXHAUST MODIFICATIONS: Area P CF Full System

JET KIT OR STOCK? Jet Kit

BRAND OF JET KIT? Dynojet

MAIN JET: 98 DJ

NEEDLE AND CLIP POSITION: DJ Needle with clip on third groove and two washers

MIXTURE SCREW SETTINGS: Slightly more than 3 turns on each

ELEVATION: 200 feet

MISCELLANESOUS INFORMATION ABOUT YOUR BIKE’S JETTING SETUP: I felt a huge difference with the recommended settings with the DJ Needles and the Main Jet. Pulls stronger in the mids and highs, but I set the mixture screws to about 2.75 at first and I practically chopped off power below 3.5k rpms. Changed it to 3 turns out which is recommended by the instructions and I got the power back, but it still felt a little off. So I turned it maybe around 1/8th of a turn and adjusted my idle so it's a little closer to 1.4k. Perfection. Now, if only the bike had a 7th gear.

Also, took out the Kleen Air System. No more pops.
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Old August 21st, 2010, 03:19 AM   #43
WindMeUp
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Name: Stevo
Location: Seattle Wa
Join Date: Aug 2010

Motorcycle(s): 2010 Ninja 250R SE, GSX650FK8, DL650K5, CH80K2, AN400K7, SH150i

Posts: 95
Year: 2010

Intake Modifications: None

Exhaust Modifications: None

Jet Kit or Stock? Stock

brand of jet kit? Stevo Select

Pilot Jet: #40

Main Jet: #100

Needle and Clip Position: Stock

Mixture Screw Settings: 3 Turns Out

Elevation: 320 Ft

Miscellaneous information about your bike’s jetting setup: My jetting is fairly conservative, but it does increase throttle response across the board, and does not adversely effect fuel mileage.
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Old August 27th, 2010, 01:19 PM   #44
tjkamper
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Name: Travis
Location: Warwick, RI
Join Date: Apr 2009

Motorcycle(s): 2009 Ninja 250R

Posts: A lot.
Year: 2009

Intake Modifications: Box Removed. K&N R-0990

Exhaust Modifications: Jardine RT5 Full System

Jet Kit or Stock? Jet

brand of jet kit? MIXED

Pilot Jet: #40

Main Jet: #112 Keihin

Needle and Clip Position: Dynojet Needles 4th clip Position

Mixture Screw Settings: 2.25 turns

Elevation: 2200 Ft

Miscellaneous information about your bike’s jetting setup: Pulls smoothly from idle to redline. Dropping to the 3rd Clip position created a stumble at 4500RPM so I went back up to the 4th. This is the best setup I have had on the bike to date.
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Last futzed with by tjkamper; September 30th, 2010 at 11:12 AM.
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Old October 6th, 2010, 11:14 AM   #45
scotty
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Name: Scott
Location: Carlise Ohio
Join Date: Apr 2010

Motorcycle(s): Yahama v star 650 classic

Posts: A lot.
YEAR:2010

INTAKE MODIFICATIONS:Air box removed K&N R-0990 Filter, Kleen Air System Removed

EXHAUST MODIFICATIONS:Full exhaust

JET KIT OR STOCK? Stock

BRAND OF JET KIT?Keihin

MAIN JET:Keihin 110

NEEDLE AND CLIP POSITION:Shimmed with 3 washers

MIXTURE SCREW SETTINGS:2.5 turns out

ELEVATION:0-1000 Ft

MISCELLANEOUS INFORMATION ABOUT YOUR BIKE’S JETTING SETUP:

Still messing with it. Runs good and starts up good. Kind of ruff taking off though.

Last futzed with by scotty; October 16th, 2010 at 03:40 PM.
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Old October 8th, 2010, 02:30 AM   #46
GiGs
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Name: Michael
Location: Melbourne
Join Date: Sep 2010

Motorcycle(s): 2008 Kawasaki Ninja 250r

Posts: 139
YEAR: 2008

INTAKE MODIFICATIONS: Airbox removed, Clean Air System Removed and Plugged, K&N R0990, Redline Breather (for the crankcase)

EXHAUST MODIFICATIONS:
Full Yoshimura CF with silencer/low volume insert

JET KIT OR STOCK? Jet Kit

BRAND OF JET KIT? Factory Pro

MAIN JET: 112

NEEDLE AND CLIP POSITION:
3rd Position (with 3 washers and cir-clip ONTOP to stop movement/bounce)

MIXTURE SCREW SETTINGS:
1.8 Out

ELEVATION:
??? 1000ft ??? Melbourne/Eastern Suburbs

MISCELLANEOUS INFORMATION ABOUT YOUR BIKE’S JETTING SETUP:

Switched from FP 40 Pilot back to stock 38 Pilot (previously WAY to rich)...Bike pulls hard ALL the way to redline ! No surges, no bogging, no problems. Spark plug colour is 100% perfect.
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Old November 12th, 2010, 06:59 PM   #47
JMcDonald
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Location: Oklahoma
Join Date: Sep 2010

Motorcycle(s): 2008 250R

Posts: 771
YEAR: 2008

INTAKE MODIFICATIONS: K&N R-0990 Pod Filter

EXHAUST MODIFICATIONS: None

BRAND OF JET KIT? Factory Pro

MAIN JET: 112 (112.5?)

NEEDLE AND CLIP POSITION: 3rd (middle) position.

MIXTURE SCREW SETTINGS: Started at 2.75 turns out, ended up at around 3.5 (Stock #38 Pilot).

ELEVATION: Roughly 1000-1200 feet.

MISCELLANEOUS INFORMATION ABOUT YOUR BIKE’S JETTING SETUP:

With the K&N on and stock jet settings, it was so lean I could not go past maybe 1/4 throttle without it stuttering and hesitating (and not picking up any more speed). It was like riding a moped, and I could not get above about 50mph. I had changed the jets to the 112s anticipating needing them with the custom exhaust, but will probably be keeping the stock exhaust at least for a while and have ordered smaller jets. I hadn't tried the 110s with the stock exhaust.

After playing with the mixture screws, I settled around 3.5 turns out (roughly), and now it starts up much better than before and will cleanly pull from under 2k RPM. The low-end response has picked up enough that even with my 16/41 gearing (25% taller than stock), I will occasionally just leave it in 2nd (same ratio as stock 3rd gear) if I am doing a lot of stopping and going, and it will move just fine for regular traffic / neighborhood streets.
__________________________________________________
Factory Pro Jet Kit, K&N R-0990 Pod Filter, Sportisi VR Black Exhaust, BRT TIS Ignition, White Paint, and 16/41 Sprockets. Soon: Maybe a 37T Rear Sprocket if I get things running like I'd hoped.

Last futzed with by JMcDonald; December 2nd, 2010 at 05:49 PM.
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Old November 15th, 2010, 01:02 AM   #48
wayanlam
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with the custom/aftermarket exhaust i think you will most likely need to upgrade to #40 pilots... quite a few people have changed that after replacing the air filter, and using a full exhaust system. wouldn't want the needles to fall out due to turning them out too far!
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Dynojet Power Commander V, KnN Open filter, intake and exhaust ported, Puig Windshield
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Old November 19th, 2010, 08:53 PM   #49
Robbo81
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Name: Robert
Location: sydney
Join Date: Sep 2009

Motorcycle(s): 250r

Posts: 35
YEAR: 2009

INTAKE MODIFICATIONS: Snorkel removed

EXHAUST MODIFICATIONS: Stock

JET KIT OR STOCK? Jet Kit

BRAND OF JET KIT? Dyno Jet

MAIN JET: 96

NEEDLE AND CLIP POSITION: 3rd Position from the top

MIXTURE SCREW SETTINGS: Started at 3 turns out. not sure what its at now

ELEVATION: ??? 80 to 200 ft ??? Sydney, Australia

MISCELLANEOUS INFORMATION ABOUT YOUR BIKE’S JETTING SETUP:

Bike is totaly stock apart from these mods. It used to loose power at about 10500rpm to 11000rpm. Thought I would give this a try. I bought a dynojet kit stage 2 off ebay. Now the bike pulls all the way to red line. Its not a massive increase in power, just a lot more rider friendly and can be pushed harder if you want too. Running a little rich down low though and fuel economy has gone out the window, but that could be due to constantly going to red line as I could not do this before . Wouldn't mind trying the 98 jets just to see if it makes a difference.
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Old November 21st, 2010, 05:31 PM   #50
Suey250
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Name: Tony
Location: Virginia
Join Date: Dec 2008

Motorcycle(s): 2008 Ninja 250R

Posts: 31
YEAR: 2008

INTAKE MODIFICATIONS: Snorkel Removed

EXHAUST MODIFICATIONS: Area P 15 " Quiet Core

JET KIT OR STOCK? Jet

BRAND OF JET KIT? Factory Pro

MAIN JET: Stock #98

NEEDLE AND CLIP POSITION: 4th down

MIXTURE SCREW SETTINGS: Unknown, idles okay.

ELEVATION: 0 - 1000 ft

MISCELLANEOUS INFORMATION ABOUT YOUR BIKE’S JETTING SETUP: With 3rd position down on the needle during acceleration it would take forever to reach redline, but now with it at the 4th position the ninja is a blast to ride, with much better throttle response and goes through the gears much quicker. I may try upping the main jet to #100 in the future, but as of right now it runs good enough for me.
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Old December 10th, 2010, 08:54 AM   #51
just_robert
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Name: Robert
Location: Hillsboro OR
Join Date: Nov 2010

Motorcycle(s): 08 Ninja 250R

Posts: 15
YEAR: 2008

INTAKE MODIFICATIONS: air box removed. K&N Dual pods

EXHAUST MODIFICATIONS: M4 carbon slip-on

JET KIT OR STOCK? Jet Kit

BRAND OF JET KIT? Factory Pro

MAIN JET: 112

NEEDLE AND CLIP POSITION: Stock needle with 3 washers

MIXTURE SCREW SETTINGS: 2-1/2 turns out from bottom

ELEVATION: sea level

MISCELLANEOUS INFORMATION ABOUT YOUR BIKE’S JETTING SETUP: I am a newbee to my 250R. Had it two weeks w/ the M4 pipe, but the 1st owner did not jet it. I added the pods and the jet kit, removing the air box was a PITA, but now it runs and sounds incredible, maybe a little loud, but great.
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Old December 13th, 2010, 11:01 PM   #52
just_robert
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Name: Robert
Location: Hillsboro OR
Join Date: Nov 2010

Motorcycle(s): 08 Ninja 250R

Posts: 15
YEAR: 2008

INTAKE MODIFICATIONS: air box removed. K&N Dual pods

EXHAUST MODIFICATIONS: M4 carbon slip-on

JET KIT OR STOCK? Jet Kit

BRAND OF JET KIT? Factory Pro

MAIN JET: 112

Pilot Jet: 40

NEEDLE AND CLIP POSITION: Changed to FP needle in position 3

MIXTURE SCREW SETTINGS: 2-1/2 turns out from bottom, changed to 1.5 turns out

ELEVATION: sea level

MISCELLANEOUS INFORMATION ABOUT YOUR BIKE’S JETTING SETUP: After speaking to a rep @ FP, I added the Pilot jet and changed my mix screw to 1.5. Also used the FP needle in position 3. This is the best my bike has run. It pulls to redline very well. No more hesitation and the power band is much more linear. I love my bike even more. Thanks all for the help.
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Old December 25th, 2010, 06:27 PM   #53
GiGs
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Location: Melbourne
Join Date: Sep 2010

Motorcycle(s): 2008 Kawasaki Ninja 250r

Posts: 139
Re did my jetting...

YEAR: 2008

INTAKE MODIFICATIONS: K&N R0990, Clean Air System Removed and Plugged, Redline Breather (for the crankcase)

EXHAUST MODIFICATIONS: Full Yoshimura CF with silencer/low volume insert

JET KIT OR STOCK? Jet Kit

BRAND OF JET KIT? Factory Pro

MAIN JET: 110

NEEDLE AND CLIP POSITION: 2.5 (washer and circlip ONTOP to stop any movement)

MIXTURE SCREW SETTINGS: Precisely 2.8 turns out

ELEVATION: 40ft Above Sea Level

MISCELLANEOUS INFORMATION ABOUT YOUR BIKE’S JETTING SETUP:
Tuned using a wideband O2 sensor (AEM UEGO), Pre-gen CDI, Re-tuned because of a lack of performance and WOW what a difference tuning to an A/F made !

Previously (according to the wideband) it was off the scale lean down low and off the scale rich mid range and up. Now, completely different story - pulls everywhere, no problems or bad spots anywhere.
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Old February 2nd, 2011, 10:42 PM   #54
Shiloh
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Name: Andy
Location: Houston - Katy
Join Date: Jan 2011

Motorcycle(s): 2010 Ninja 250R , 2009 Yamaha FZ6 Fazer

Posts: 20
YEAR: 2010

INTAKE MODIFICATIONS: K&N R0990, Kleen Air System Removed

EXHAUST MODIFICATIONS: Yoshimura Full System

JET KIT OR STOCK? Jet Kit

BRAND OF JET KIT? Factory Pro

MAIN JET: 110 FP

PILOT JET: 40 FP

NEEDLES AND CLIP POSITION: Factory Pro / 4th position (from top)

MIXTURE SCREW SETTINGS: 2 1/4 turns out

FLOAT HEIGHT: 16.9 mm

ELEVATION: Sea Level (Texas Gulf Coast)

MISCELLANEOUS INFORMATION ABOUT YOUR BIKE’S JETTING SETUP: Was running 112 mains, tried the 110's and improved overall response without any top end loss. 40 pilots are an improvement over the 38's on the on the low end also. Initially clips in 3rd position, some surging at 5 to 6k rpm, changed to 4th position. Also required mixture screws to be readjusted to 2 1/4 out.
__________________________________________________
K&N 0990, FP Jet Kit, Yoshimura Full System, Kleen Air Removed, Kisan Modulators Front and Rear

Last futzed with by Shiloh; February 15th, 2011 at 08:52 AM. Reason: Add Float Height
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Old February 4th, 2011, 04:40 PM   #55
Bueller999
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Name: David
Location: Aurora, CO
Join Date: Nov 2010

Motorcycle(s): 08 Ninja 650r, 06 SV 650 race, 08 250r race, 03 Buell XB9s, 01 KTM 300 EXC

Posts: 131
Mile High Tuning

YEAR: 2008

INTAKE MODIFICATIONS: None/Kleen Air blocked off

EXHAUST MODIFICATIONS: AreaP

JET KIT OR STOCK? Stock

BRAND OF JET KIT? n/a

MAIN JET: 95

PILOT JET: 38

NEEDLE AND CLIP POSITION: Stock 2 washers

MIXTURE SCREW SETTINGS: 2 3/4 turns out

ELEVATION: 5280

TEMP: 50f

MISCELLANEOUS INFORMATION ABOUT YOUR BIKE’S JETTING SETUP:
This is a race bike in the Denver area, it is built to race a spec class, so no intake mods (snorkle must remain).


This is my present settings, I had a 92 main in but it was a bit lean, I might try the 40 pilot since I am so far out on the mixture screws. The next track day opportunity I have I will be trying some tweaking, but it is running pretty well.

I added a temperature heading, since I am tunning at 30-50 deg. less than what I will be racing at.
Luckily our tracks are all at relatively the same elevation.

Last futzed with by Bueller999; March 5th, 2011 at 09:42 AM.
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Old March 4th, 2011, 08:39 PM   #56
Bueller999
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Name: David
Location: Aurora, CO
Join Date: Nov 2010

Motorcycle(s): 08 Ninja 650r, 06 SV 650 race, 08 250r race, 03 Buell XB9s, 01 KTM 300 EXC

Posts: 131
YEAR: 2008

INTAKE MODIFICATIONS: None/Kleen Air blocked off

EXHAUST MODIFICATIONS: AreaP

JET KIT OR STOCK? Stock

BRAND OF JET KIT? n/a

MAIN JET: 95

PILOT JET: 38

NEEDLE AND CLIP POSITION: Stock- 2 washers

MIXTURE SCREW SETTINGS: 3 turns out

ELEVATION: 5280'

TEMP: 60f

MISCELLANEOUS INFORMATION ABOUT YOUR BIKE’S JETTING SETUP:
OK I put the bike on a dyno and although I am running a little lean on the main the bike is turning out 29hp on pump gas with the snorkel and oem filter in. As the temps warm up it will richen up a bit so I should be spot on.
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Old March 15th, 2011, 09:49 AM   #57
gfloyd2002
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Name: Floyd
Location: Barbados
Join Date: Dec 2010

Motorcycle(s): '10 Ninja 250R Special Edition Green

Posts: A lot.
Blog Entries: 13
MOTM - Feb '12
YEAR: 2010

INTAKE MODIFICATIONS: Snorkel removed, stock airbox

EXHAUST MODIFICATIONS: AreaP Quiet Core 18" Full

JET KIT OR STOCK? Kit.

BRAND OF JET KIT? Dynojet Stage 2

MAIN JET: 98

PILOT JET: Stock

NEEDLE AND CLIP POSITION: 3rd clip + 2 washers

MIXTURE SCREW SETTINGS: 2.25 turns open

ELEVATION: Sea Level

TEMP: 75-95 and humid

MISCELLANEOUS INFORMATION ABOUT YOUR BIKE’S JETTING SETUP:
With skorkel in, 2 to 2.25 was just right. When I pulled the snorkle, I started with AP/Dynojet recommended 3 turns and it was richer than Oprah, and just as slow. Dialed it back to 2.5 turns and it was much better, but still just a bit boggy at low revs, with a glorious rumble but not pulling hard. If 3 turns was rich as Oprah, 2.5 was MacBeth: "Full of sound and fury, signifying nothing." Against all odds, 2.25 is just about right. Maybe a tenth of turn lean, but dang close to perfect. Nice pull throughout the revs, almost get it to pop on very hard engine braking but not quite. Drops revs well after accel. Wierd that 2.25 works when 3 is recommended, but there you go.
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Last futzed with by gfloyd2002; March 19th, 2011 at 02:33 PM.
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Old March 15th, 2011, 01:28 PM   #58
almost40
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Name: Kevin
Location: Illinois
Join Date: Apr 2009

Motorcycle(s): 2008 250R Track-Bike Woodcraft clip-ons and rearsets FZ-6 track bike

Posts: A lot.
YEAR: 2008

INTAKE MODIFICATIONS: snorkel removed snorkel hole size increased by 20%

EXHAUST MODIFICATIONS: Area P QC Full

JET KIT OR STOCK: Kit

BRAND OF JET KIT? Dynojet

MAIN JET:100

NEEDLE AND CLIP POSITION: Dynojet, 3rd

MIXTURE SCREW SETTINGS: 2 3/4 maybe I cant remember

ELEVATION: 175 foot

MISCELLANEOUS INFORMATION ABOUT YOUR BIKE’S JETTING SETUP:98 main was good but not perfect in my eyes. (I ride in warm and cold weather and figured that when it got cold the 98 would lean out too much) Got a little more up top pull with the 100.
100 main was a little too rich.
Opened up the snorkel hole a bit and that brought everything back in line.

I thought I posted on this long ago is there 2 threads on this topic??
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Full Area P QC
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Old April 8th, 2011, 01:27 PM   #59
KGar
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Name: Ken
Location: Phoenix, Arizona
Join Date: Feb 2011

Motorcycle(s): 2010 Ninja 250r (Passion Red); 1999 BMW K1200RS (Marrakesh Red)

Posts: 81
YEAR:2010

INTAKE MODIFICATIONS: Airbox removed

EXHAUST MODIFICATIONS: Area P full stainless with 18" Carbon Fiber (Race)

JET KIT OR STOCK? Jet Kit

BRAND OF JET KIT? Dynojet

MAIN JET: 106

NEEDLE AND CLIP POSITION: 3'rd from top

MIXTURE SCREW SETTINGS: 2.75 out on both

ELEVATION: 2000+/-

MISCELLANEOUS INFORMATION ABOUT YOUR BIKE’S JETTING SETUP: Need more time with this setup but seems ok for now. Spark plugs have good color (light mocha?) May go to 4'th clip position....we'll see
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Old April 9th, 2011, 05:41 PM   #60
Boosted139
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Name: Justin
Location: Central NJ
Join Date: Sep 2010

Motorcycle(s): 2009 Ninja 250R SE, 2009 Triumph Daytona 675

Posts: 334
YEAR:2009

INTAKE MODIFICATIONS:Air box removed K&N R-0990 Filter, Kleen Air System Removed

EXHAUST MODIFICATIONS:Area P Race Exhaust 18 inch

JET KIT OR STOCK? jet kit

BRAND OF JET KIT? dynojet

MAIN JET: 108

NEEDLE AND CLIP POSITION: e-clip in 3rd position

MIXTURE SCREW SETTINGS:2.75 turns out

ELEVATION:

MISCELLANEOUS INFORMATION ABOUT YOUR BIKE’S JETTING SETUP:

Possibly more tweaking, but runs great. Thought 108 was going to be too rich, but bike pulls hard to red line!
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Old April 20th, 2011, 05:10 PM   #61
lotus168
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Name: henry
Location: jakarta
Join Date: Mar 2011

Motorcycle(s): ninja 250r

Posts: 13
YEAR:2010

INTAKE MODIFICATIONS:snorkle removed, knn replacement filter, Kleen Air System Removed

EXHAUST MODIFICATIONS:leo vince evo2 full system

JET KIT OR STOCK? jet kit

BRAND OF JET KIT? factory pro

MAIN JET: 98 (std)

PILOT JET: 38(std)

NEEDLE AND CLIP POSITION: e-clip in 3rd position

MIXTURE SCREW SETTINGS:roughly 2 turn out

ELEVATION: jakarta(about sea level)

MISCELLANEOUS INFORMATION ABOUT YOUR BIKE’S JETTING SETUP:

after playing around with sportisi jet kit, eclip on 3rd(sportisi) mj98 sportisi), i prefered using factory pro needle with specs above, the bike feel very light, while using the sportisi needle bike is alot more heavy, i currently satisfied with factory pro... hope this help...
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Old April 21st, 2011, 03:31 PM   #62
Chim
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Name: Scott
Location: Orlando
Join Date: Apr 2011

Motorcycle(s): 07 Ninja 250

Posts: 19
YEAR: 2007

INTAKE MODIFICATIONS:
Uni air filter x2 (k&n0990 ordered)

EXHAUST MODIFICATIONS: None

JET KIT OR STOCK?
Stock

BRAND OF JET KIT? n/a

MAIN JET: 110

NEEDLE AND CLIP POSITION: 3 Washers shimmed

MIXTURE SCREW SETTINGS: 2.5 turns out

ELEVATION: Kneecaps

MISCELLANEOUS INFORMATION ABOUT YOUR BIKE’S JETTING SETUP:

So with this being my first bike I think, after 1.5 weeks, I finally got the settings right. I started with just shimming after installing the Air Filters which did help the pull off the line, etc, but didn't do much noticeable towards needing choke and the time of such. I got the 110 jets and it was way too lean with just those on so put washers on one by one till I ended up with an overall smoother going at 3. For the mixture screws, I went the route of having the engine warmed up to get the setting right. I had gone about it many times before but, with it being my first bike, I didn't really know what to listen for. Having the engine on and warmed up as you turn the screws lets you really hear where the sweet spot is.

I do, still, have to start it with choke, but the amount needed has gone down to half instead of full. Also, it's much quicker in being able to take it off, about 2min of riding and it's golden. Idle speed set at 1500rpm and now it's able to hold it quite well. When the throttle is just turned real quick it drops back down to idle instantly, whereas before it would hang for a few seconds before dropping back.
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Old April 21st, 2011, 05:25 PM   #63
Alex
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Old April 21st, 2011, 07:52 PM   #64
lotus168
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Name: henry
Location: jakarta
Join Date: Mar 2011

Motorcycle(s): ninja 250r

Posts: 13
redid jetting

YEAR:2010

INTAKE MODIFICATIONS:snorkle removed, knn replacement filter, Kleen Air System Removed

EXHAUST MODIFICATIONS:leo vince evo2 full system

JET KIT OR STOCK? jet kit

BRAND OF JET KIT? factory pro

MAIN JET: 100(FP)

PILOT JET: 40(FP)

NEEDLE AND CLIP POSITION: e-clip in 3rd position

MIXTURE SCREW SETTINGS:roughly 1 1/4 and 1 3/4 turn out

ELEVATION: jakarta(about sea level)

MISCELLANEOUS INFORMATION ABOUT YOUR BIKE’S JETTING SETUP:

98 mj too lean above 8k rpm and take forever to reach redline, 100 mj is much better, PJ 40 make it smoother at low rpm
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Old May 25th, 2011, 06:52 PM   #65
Cazper
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Name: Dustin
Location: Oceanside, CA
Join Date: Jun 2010

Motorcycle(s): 09' SE 250R (sold), 03' ZX-6R, 99' XL1200C SP

Posts: A lot.
Blog Entries: 3
YEAR: 09

INTAKE MODIFICATIONS: Airbox removed, Kleen air system removed and blocked, K&N R-0990 and Uni Filter UP-104 for crankcase breather

EXHAUST MODIFICATIONS: Yoshimura TRC CF Full Exhaust, Silencer inserted

JET KIT OR STOCK? Jet Kit

BRAND OF JET KIT? Customized AreaP/Dynojet Kit

MAIN JET: DJ106

NEEDLE AND CLIP POSITION: 3rd from top with 2 washers and clip on top

MIXTURE SCREW SETTINGS: 2 1/2

ELEVATION: Mostly Sea Level

MISCELLANEOUS INFORMATION ABOUT YOUR BIKE’S JETTING SETUP: Currently idles well and revs well however between 8-10K RPM's seems to have a little lag of power. Not sure how to correct this... time for some research.
__________________________________________________
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$2,547.83
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Old June 10th, 2011, 01:03 AM   #66
hoodadooda
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Name: Aaron
Location: Henrico, VA
Join Date: May 2010

Motorcycle(s): 2009 Kawasaki Ninja 250 (sold), 2006 Daytona 675 in Tornado Red (sold), 2007 Ninja 650

Posts: 272
YEAR: 2009

INTAKE MODIFICATIONS: R-0990 K&N Filter (also has a drycharger over it, it shouldn't affect intake much though if at all)

EXHAUST MODIFICATIONS: Area P CF Full System

JET KIT OR STOCK? Jet Kit

BRAND OF JET KIT? Factory Pro

MAIN JET: 112

NEEDLE AND CLIP POSITION: Needle with the clip on the 3rd position with one washer underneath and two up top.

MIXTURE SCREW SETTINGS: Somewhere around 2 1/4, probably more

ELEVATION: 200 feet

MISCELLANESOUS INFORMATION ABOUT YOUR BIKE’S JETTING SETUP: I did move the floats 1mm to lean it out just a little bit as the A/F guage was reading rich and the bike was giving me feedback that convinced me it was rich. My final setup was giving me the readings (between 11.5 and 13.5) and the pull I was looking for throughout the rev range.

Also, I did try the 110 since it's been really hot out recently and adjusted the needles and mixture screws accordingly. It felt decent, but my readings were pointing towards being a bit lean up top, not horribly lean, but in the 14's. I switched to a 112 and that took care of that, but I was a bit rich down low, so I adjusted the floats a little and this moved me into the range I wanted with the readings and it also felt good.
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Old June 13th, 2011, 09:33 PM   #67
KURT
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Name: Kurt
Location: Goodyear, Az
Join Date: Jul 2010

Motorcycle(s): sold

Posts: 264
YEAR: 2009

INTAKE MODIFICATIONS: K & N replacement filter and snorkle removed

EXHAUST MODIFICATIONS: None

JET KIT OR STOCK? Kit

BRAND OF JET KIT? Dynojet

MAIN JET: 96

NEEDLE AND CLIP POSITION:unknown

MIXTURE SCREW SETTINGS:unknown

ELEVATION: 1100-1200ft

MISCELLANEOUS INFORMATION ABOUT YOUR BIKE’S JETTING SETUP:

I thought I'd include this, in case anyone wondered what the dealerships might be installing. I asked them to rejet the wife's bike, to improve some rideability issues. They installed the new fuel needles, and actually went down, from a 98 main jet, to a 96.

Bike idles much smoother, warms up quicker, and pulls better thru midrange.

Wife is happy.
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Old June 14th, 2011, 03:29 PM   #68
HMB-ninja
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Name: David
Location: Bay Area
Join Date: Aug 2009

Motorcycle(s): 08 Ninja 250R(red) 09 Ninja 650R(red) 08 PGO Buddy 150(Pamplona)

Posts: 41
-----------------------------------------------------------------------------------------------------------------


YEAR:2008

INTAKE MODIFICATIONS: Snorkel removed, K&N filter in place of factory

EXHAUST MODIFICATIONS: Area P quite core

JET KIT OR STOCK? jet kit


BRAND OF JET KIT? Factory Pro

MAIN JET: 92

NEEDLE AND CLIP POSITION: Factory Pro needles clip on 3rd notch from top w/ 3 washers as instructions recamend

MIXTURE SCREW SETTINGS:21/2 turns out on both

ELEVATION: sea level-1000 ft

MISCELLANEOUS INFORMATION ABOUT YOUR BIKE’S JETTING SETUP: replaced stock pilot jets(38) w/ factory pro jets(40). All C.A.R.B. and keen air systems in place.
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Old June 17th, 2011, 08:17 PM   #69
forevertwowheels
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Name: TKO
Location: Winnipeg, MB
Join Date: Jan 2011

Motorcycle(s): 2010 Kawasaki Ninja 250R 2011 Honda CBR600RR

Posts: 50
Rejetted

YEAR: 2010

INTAKE MODIFICATIONS: Airbox removed, K&N R-0990

EXHAUST MODIFICATIONS: AreaP Race System 18"

JET KIT OR STOCK? Jet Kit

BRAND OF JET KIT? Dynojet

MAIN JET: 106

NEEDLE AND CLIP POSITION: 3rd from top

MIXTURE SCREW SETTINGS: 2 1/2 turns out

ELEVATION: ~1000 ft.

MISCELLANEOUS INFORMATION ABOUT YOUR BIKE’S JETTING SETUP:
Started with 108 mains and clip in 4th. Could not get low rpms set right. Mixture screws had no effect, the rpms hanged for forever. Took it out for a ride around the block. idle to 5000 wasn't that good, 5000 to 8500 pulled hard, 8500 to redline just bogged out at 10500 and never reached redline. Changed the e-clip to the 5th position and quickly tested before going to bed, the rpms return back to idle after blipping the throttle. Next changed main jets to 104 (my kit was missing 106 otherwise i would have tried those) and reset the mixture screws to 2 1/2 turn out. Took it for a ride around the block and it pulls hard all the way to redline, it feels so much better than stock. at low rpms the throttle response feels instant but possibly slightly rich. some fine tuning left. need to go for a longer ride to be sure. going to try moving back to the 4th clip now and/or try adjusting the mixutre screws, and order some 106 and see if those work.

Took the bike on the highway, found it was rich at midrange, moved to the 4th clip. Took it out again it was still rich in the midrange but at higher rpms it lost power and most of the time wouldn't get over 10000. I ordered 106 main jets and installed those and moved to the 3rd clip at the same time. The bike runs pretty near perfect. I might play around with the mixture screws a bit and move the clip one more time to see if i get any better results.
__________________________________________________
Projekt D Fender Eliminater / DMP Integrated Taillight / Proton Flushmounts / Area P 18" CF High Mount Race System / Kleen Air System Removed / Airbox Removed / K&N R-0990 / DynoJet Jet Kit

Last futzed with by forevertwowheels; June 24th, 2011 at 08:34 PM. Reason: Rejetted
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Old June 22nd, 2011, 02:34 PM   #70
xer0x
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Name: Anthony
Location: Toronto
Join Date: May 2009

Motorcycle(s): 09 250r

Posts: 4
YEAR: 2010

INTAKE MODIFICATIONS: K&N R-0990, Clean Air System Removed, Crankcase Breather

EXHAUST MODIFICATIONS: Area P Race Exhaust 18"

JET KIT OR STOCK? Jet

BRAND OF JET KIT? Factory Pro

MAIN JET: 112

NEEDLE AND CLIP POSITION: Factory Pro 3rd Clip

MIXTURE SCREW SETTINGS: 2 1/2 turns out

ELEVATION: 650ft ASL

MISCELLANEOUS INFORMATION ABOUT YOUR BIKE’S JETTING SETUP: Started with 2 3/4 turns out, but was running a bit rich that when I blipped the throttle at idle it dipped below 1350rpm before returning to it. Took it down to 2.5 turns out it throttle returns instantly and bike performs great. The carbs have also been sync'd.
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Old June 25th, 2011, 02:12 PM   #71
Rassie
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Name: Rassie
Location: Cary, NC
Join Date: Jun 2011

Motorcycle(s): 300 Ninja, 250R Ninja, SV650S, CB350, GT750, Aprilia RS250, Triumph Street Triple R

Posts: 101
Jetting on my 2008.

YEAR: 2008

INTAKE MODIFICATIONS: Snorkel Removed, Pipercross Filter (stock replacement)

EXHAUST MODIFICATIONS: Stock header, Modified open Marving Carbon fiber can from a Ducati Monster.

JET KIT OR STOCK? Jet Kit

BRAND OF JET KIT? DynoJet

MAIN JET: #100 (#98 also worked but felt a bit lean)

NEEDLE AND CLIP POSITION: DynoJet 3rd Clip and 2 washers on top.

MIXTURE SCREW SETTINGS: 3.0 turns out

ELEVATION: 350ft ASL

MISCELLANEOUS INFORMATION ABOUT YOUR BIKE’S JETTING SETUP: Installed the DynoJet kit exactly according to the instructions. It does feel like the mid range is a bit dead so may go up to the 4th clip on the needles to see how that works. But at this point I am very happy with the bike and it pulls smoothly through the entire rev range with no noticeable dips in power. No burbles or spluttering or anything out of the ordinary. The carbs have also been sync'd which seems to have made it smoother overall. Left the idle crews at 3 full turns as recommended and have not touched it since it feels OK to me, but perhaps I don't know any better. UPDATE: Bike did not feel perfect while riding at constant throttle with some very slight surging so I went up one size on the jets to 100. It now feels a little better and may even be a tad rich but that is much better than it feeling lean.
__________________________________________________

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Last futzed with by Rassie; July 3rd, 2011 at 10:20 AM.
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Old July 15th, 2011, 11:28 AM   #72
gt_turbo
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Name: L
Location: WI
Join Date: Apr 2011

Motorcycle(s): '09 250R, '13 CBR500R

Posts: 709
YEAR: 2009

INTAKE MODIFICATIONS: K&N 0990

EXHAUST MODIFICATIONS: PLM Full System.

JET KIT OR STOCK? Jet Kit

BRAND OF JET KIT? FP

MAIN JET: 110

NEEDLE AND CLIP POSITION: 3rd Clip and 3 washers on top

MIXTURE SCREW SETTINGS: 2.5 turns out

ELEVATION: Sea level

MISCELLANEOUS INFORMATION ABOUT YOUR BIKE’S JETTING SETUP:
originally started installed 112's. dyno'ed at 29.8 HP with 112's. switched to 110. have yet to dyno with the 110's, however butt dyno says it seems to pull better between 8k-redline with the 110's.
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Old July 20th, 2011, 03:38 AM   #73
NathanUc
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Name: Nathan
Location: Bloomington, IN
Join Date: Feb 2011

Motorcycle(s): Black 2013 Ninja ZX6R ABS

Posts: 609
Blog Entries: 3
YEAR: 2010

INTAKE MODIFICATIONS: De-Snorkeled, FFC drop in filter

EXHAUST MODIFICATIONS: Sportisi VR Carbon full system

JET KIT OR STOCK? Jet Kit

BRAND OF JET KIT? Factory Pro

MAIN JET: 98 (stock)

PILOT JET: 40

NEEDLE AND CLIP POSITION: Factory Pro needle clip 3rd with two washers on top (clip on top to hold em)

MIXTURE SCREW SETTINGS: stock

ELEVATION: 745 feet

MISCELLANESOUS INFORMATION ABOUT YOUR BIKE’S JETTING SETUP:
It's still a major work in progress. I was able to get a Stage 3 FP kit for $20 so I did (even though stage 3 jets are far too large). Folks at Factory Pro recommended me a 92 main jet but I'm not so sure about that.
Still needs low end tweaking, but mid and high revs feel great. Didn't want to mess with the idle screw until I figure my jets out. After pulling the carbs about 5 times.. I'm ready to just rip out that airbox............ Either way, hopefully getting on a dyno this weekend to see results
__________________________________________________
Downgraded to a 2013 636. Previous owner of a 2010 250r
---------------------------------
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Old August 11th, 2011, 10:44 AM   #74
NathanUc
B-Town Ninja
 
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Name: Nathan
Location: Bloomington, IN
Join Date: Feb 2011

Motorcycle(s): Black 2013 Ninja ZX6R ABS

Posts: 609
Blog Entries: 3
YEAR: 2010

INTAKE MODIFICATIONS: K&N Pods, kleen air removed and blocked

EXHAUST MODIFICATIONS: Sportisi VR Carbon full system

JET KIT OR STOCK? Jet Kit

BRAND OF JET KIT? Factory Pro

MAIN JET: 112

PILOT JET: 40

NEEDLE AND CLIP POSITION: Factory Pro needle clip 3rd with two washers on top (clip on top to hold em)

MIXTURE SCREW SETTINGS: 3 turns out

ELEVATION: 745 feet

MISCELLANESOUS INFORMATION ABOUT YOUR BIKE’S JETTING SETUP:
Removed airbox finally. 110 felt great, 112 felt better, 115 felt boggy.

When WOT at 13k rpm first gear (around 30-40mph) when shifting into second my lil ninjette actually does a small power wheelie (about a foot off the ground). It's wayyyyy fun in safe moderation (and didn't happen before I removed airbox). Other then that, there is significantly more pull all the way from 2-13k rpm now. I dropped from about 50-55 MPG to around 45-50 MPG city ride but honestly don't mind.
__________________________________________________
Downgraded to a 2013 636. Previous owner of a 2010 250r
---------------------------------
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Old September 8th, 2011, 05:17 PM   #75
nickadolph
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Name: nick
Location: Twin Cities, MN
Join Date: Jun 2010

Motorcycle(s): ninja 250

Posts: 168
YEAR: 2009

INTAKE MODIFICATIONS: K&N Pods w/ stock runners, kleen air deleted and blocked

EXHAUST MODIFICATIONS: PLMFG Full Exhaust

JET KIT OR STOCK? Jets only from Jets R' Us

BRAND OF JET KIT? Jets R' Us

MAIN JET: 112

PILOT JET: stock. 38 I think.

NEEDLE AND CLIP POSITION: 3 #4 washers under each needle (stock)

MIXTURE SCREW SETTINGS: 2 3/4

ELEVATION: 800ish I think. Minneapolis, MN

MISCELLANESOUS INFORMATION ABOUT YOUR BIKE’S JETTING SETUP:
I did all my engine mods yesterday at the same time, save for shimming 2 washers last year. I decided to take the bike to school 60mi each way to see how it runs through the entire range. At first I had the screws at 2 1/2 out but the tach was all over the place with trouble keeping it running when cold before leaving for this morning. Turned them out another quarter after I got home from school today, and it started right up with a steady RPM. I also pulled the plugs to see if I was too lean/rich. Figured a 60mi ride with a final WOT once I got in the garage would give me an accurate read (pic posted below).

In regards to performance difference. I love it, the exhaust has a nice deep tone with a little burble on deccel, and I had mild power wheelie on a 1-2 shift. Being that my bike is fightered the airbox delete also adds a lot to the bike visually.

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Old October 10th, 2011, 11:08 PM   #76
Ericsh
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Name: Eric
Location: Mesa
Join Date: Apr 2011

Motorcycle(s): 02 CBR 1100xx, 95 ZX6R, 11 Ninja 250R

Posts: 1
Stock bike with Factory Pro 4.-1.0 kit

2011Ninja 250R Bone stock.

This info needs to be on the website for guys like me. I searched every web board, and jetting resource. I wanted to do this job once. The bike is for my wife - ridability was key - not ultimate top end. But nowhere in the FP instructions do you have an example of a completely bone stock bike. So I guessed. You got it right!!
Kit - the CRB-K04-1.0
Altitude: Phoenix AZ - 1100ft
No advancer
Main jet:88
Pilot:40
Needle: 3rd clip
Main air jet - stock
Temp:90's
Snorkel: intact
Fuel screw: 2 turns out
Results; warms quickly, pulls nicely off idle through the entire rev range.
No backfiring.
Bike is so much more user friendly now with useable torque down in the low RPM range (leaving a stoplight, or doing exercises during a safety course). No flat spots- all the way to redline. Mine is dead on. I consider this a manditory mod.
Please publish this, at least, on your website, so that guys like me will have a point of reference with a stock bike. Apples to apples. Thanks Eric S. Mesa, AZ
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Old December 22nd, 2011, 01:06 PM   #77
GreyBeard
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Name: Robert
Location: Saint Petersburg, FL
Join Date: Nov 2011

Motorcycle(s): 2011 Ninja 250

Posts: 2
My 2011

YEAR: 2011 SE

INTAKE MODIFICATIONS: Airbox removed, Klean-Air removed and plugged, K&N 0990 pod using stock runners.

EXHAUST MODIFICATIONS:Area P full system, 15" Carbon Fiber Quiet Core, Oval tip.

JET KIT OR STOCK? Jet Kit

BRAND OF JET KIT? Dyno Jet

MAIN JET: 108

NEEDLE AND CLIP POSITION: 3rd, 2 washers above with clip to hold them in place.

MIXTURE SCREW SETTINGS: 2.75

ELEVATION: Sea Level (Temperature mid 80's)

MISCELLANEOUS INFORMATION ABOUT YOUR BIKE’S JETTING SETUP: I worked my way up slowly, lots of carb pulls and rejetting.
(Note my tach is not working, so revs are estimates by ear)
It went like this....
#98 - Bike barely ran, poor everything.
#100 - Pretty good at the bottom end, would rev above about 6k.
#106 - Strong pull up to about 8-10k then stumbles and would not reach redline.
#108 - Pulls strong from 2k to redline, great idle, no choke needed for start.

My kit has nothing higher than the #108, but everything feels very good right now. I am going to ride it for a while and see if I notice any issues. If I do I will work with the needles at this point and leave the jets alone for now.
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Old December 24th, 2011, 12:34 PM   #78
drvr5
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Name: Carl
Location: Phoenix, AZ
Join Date: Apr 2011

Motorcycle(s): '09 250 Green+Black Special Edition

Posts: 19
YEAR: 2009

INTAKE MODIFICATIONS: K&N r-0990, kleen air removed and blocked

EXHAUST MODIFICATIONS: stock muffler shortened 4", slight baffling removal

JET KIT OR STOCK? Jets

BRAND OF JET KIT? Individual kiehin jets

MAIN JET: 110 summer, 115 winter

PILOT JET: stock

NEEDLE AND CLIP POSITION: .5mm shims (summer); 1.5mm thick shims (approx 3 washers) winter

MIXTURE SCREW SETTINGS: stock

ELEVATION: 1100 feet

TEMPERATURE: 115f high during summer, 30f low during winter
MISCELLANESOUS INFORMATION ABOUT YOUR BIKE’S JETTING SETUP: Bike runs a bit rich in the hotter parts of summer, winter jetting is spot on.
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Old January 2nd, 2012, 01:15 PM   #79
longhorn
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Name: Nick
Location: Tucson
Join Date: May 2010

Motorcycle(s): 2009 Ninja 250R

Posts: 20
MODEL 2010

EXHAUST MODIFICATIONS: Yoshimura full system

FILTER Snorkel removed K&N slide in

JET KIT OR STOCK Kit
BRAND OF JET KIT Dynojet stage II

MAIN JET:100

NEEDLE AND CLIP POSITIONynojet 4 th posn

MIXTURE SCREW SETTINGS:2 1/2 out

ELEVATION: 2,500 ft

MISCELLANEOUS INFORMATION ABOUT YOUR BIKE’S JETTING SETUP:
I had Evan Steel Performance (ESP) in Tucson do all this work and provide the materials. Carb tuning is an art that I have found that I do not possess.
They tuned the bike using their dynomometer and the horsepower increased from 24.5 at about 10,500 to 29.2 at 12,500. These figures were reflected in the bikes improved performance on the street and a vast improvement in the low end drivability. I chose not to go to pod filters and so sacrificed some top end power for low end improvement. The stock 24.5hp is probably true, this machine was noticeably weaker than my 2007. The 29.2hp is in line with Yoshimura's predictions. The only downside is that the pipe is awfully loud. I would like to attach the dyno charts if I could work out how.
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Old January 15th, 2012, 03:17 PM   #80
icbm
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Name: Steve
Location: New Mexico
Join Date: Nov 2011

Motorcycle(s): 2008 Kawasaki Ninja 250R, 2006 Suzuki Hayabusa GSX1300R, 2004 Kawasaki ZRX1200R, 1985 Kawasaki 750 Turbo

Posts: 118
01/15/2012 - Well I have been doing some mods on this little toy.

YEAR: 2008 Kawasaki Ninja 250R

INTAKE MODIFICATIONS: Air box delete with K&N 0990 Dual Pods straight on carbs and a cheap crankcase breather.

EXHAUST MODIFICATIONS: PLM Exhaust

JET KIT OR STOCK? Stock

BRAND OF JET KIT? Keihn

MAIN JET: 105

PILOT JET: Stock 38

NEEDLE AND CLIP POSITION: Stock needles with 3 washers.

MIXTURE SCREW SETTINGS: L - 3 turns out. R - 2 3/4 turns out

ELEVATION: 5300'

MISCELLANEOUS INFORMATION ABOUT YOUR BIKE’S JETTING SETUP: The DA today was 5900'. Temps of 46'. I also drilled the slides with #70 drill bit as I want the best throttle response I could get as I road race and blip the throttle on downshifts. I did not sync the carbs yet but the bike idles well at 1500rpms and doesn't seem to drop after blipping the throttle. The bike starts right up but does need the choke at first. It also revs pretty clean in neutral with no load but seems to hit a little lag at around 8-10k but then revs again hard to redline. It's maybe a little lean but since most of the track days and race days the weather will be 70-95' so I think it will be fine. I still need to go for a ride to get a better feel and look at what is going on. The spark plugs are stock and are originals. Right now it revs way better than it did when it was bone stock. It the meanwhile I will get some new spark plugs, change the oil and sync the carbs.

Edit: 01/23/2012 - The weather finally cleared up enough to go for a ride and check the jetting. I changed the spark plugs and sync'd the carbs. In the driveway the bikes revs well through out the RPM spectrum and at WOT. Maybe a very very very tiny bit hesistant in the 5-8k range but almost not noticeable. Went for the ride and the temps were about 48' with no wind. When cruising around with less than half throttle the bike runs well and throttle response is excellent but when I start to go to WOT it revs fine from 2k up to 6k then it stumbles till around 8k then it revs fine all the way to redline just fine. Not sure if it is lean or fat.

Last futzed with by icbm; January 23rd, 2012 at 05:36 PM.
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