exhaust + jetting?

jmk420 · June 2nd, 2013, 09:18 PM

*I tried the search and everything is a bit messy*

I recently purchased a 2009 Ninja 250 for my girlfriend,

We are now looking to upgrade the exhaust.

I was wondering... Full Exhaust at the moment we are looking at the

Leo Vince LV-ONE EVO II Full Exhaust

Area P Full Exhaust

and

Yoshimura Full Exhaust

I was wondering if installing these would need jetting also would the bike needed to be tuned?

Anyone running these full exhausts mind telling me which jet kit/tune they use?

Thanks so much

Jiggles · June 2nd, 2013, 09:22 PM

You seem to have lost your way my son. Let me help you find jesus once again.

cuong-nutz · June 2nd, 2013, 09:22 PM

Welcome Jeff!

Tech Sticky:
http://www.ninjette.org/forums/showthread.php?t=5586

Jetting database:
http://www.ninjette.org/forums/showthread.php?t=10208

Jiggles · June 2nd, 2013, 09:23 PM

Quote:

Originally Posted by cuong-nutz

Welcome Jeff!

Tech Sticky:
http://www.ninjette.org/forums/showthread.php?t=5586

Jetting database:
http://www.ninjette.org/forums/showthread.php?t=10208

You lose bro!

cuong-nutz · June 2nd, 2013, 09:25 PM

Quote:

Originally Posted by Jiggles

You lose bro!

jmk420 · June 2nd, 2013, 09:45 PM

Hi!

Thanks for the quick reply

I read that thread but only thing now I am confused with is should I jet after installing a full exhaust?

Also any other mods needed after jetting and full exhaust?

Jiggles · June 2nd, 2013, 09:47 PM

yes you jet with a full exhaust and for the love of god whatever you do, don't install pod filters.

psych0hans · June 2nd, 2013, 09:47 PM

Quote:

Originally Posted by jmk420

Hi!

Thanks for the quick reply

I read that thread but only thing now I am confused with is should I jet after installing a full exhaust?

Also any other mods needed after jetting and full exhaust?

YES, You will HAVE to jet after installing a full exhaust, otherwise your bike will run WAY lean.

jmk420 · June 2nd, 2013, 09:52 PM

Quote:

Originally Posted by Jiggles

yes you jet with a full exhaust and for the love of god whatever you do, don't install pod filters.

What's pod filters? Sorry Kind of new with this stuff.

Quote:

Originally Posted by psych0hans

YES, You will HAVE to jet after installing a full exhaust, otherwise your bike will run WAY lean.

Got it! So is that enough or does the bike still need to be tuned?

On my personal bike I have an exhaust but all I did was re-tune the bike.

I am new with carb bikes so I am kind of confused.

Thanks

Jiggles · June 2nd, 2013, 09:55 PM

Quote:

Originally Posted by jmk420

What's pod filters? Sorry Kind of new with this stuff.

I should never have even brought them up. Its a different intake but it just makes everything worse.

Buy an area P pipe, contact @kbryant from area p and he will help you figure out what jets and needles you will need for your bike

psych0hans · June 2nd, 2013, 09:56 PM

Quote:

Originally Posted by jmk420

Got it! So is that enough or does the bike still need to be tuned?

On my personal bike I have an exhaust but all I did was re-tune the bike.

I am new with carb bikes so I am kind of confused.

Thanks

With Carb'd bikes Jetting = Tuning. Its one and the same thing.

jmk420 · June 2nd, 2013, 11:40 PM

Quote:

Originally Posted by Jiggles

I should never have even brought them up. Its a different intake but it just makes everything worse.

Buy an area P pipe, contact @kbryant from area p and he will help you figure out what jets and needles you will need for your bike

Got it, I will ignore that! I was hearing that I should get a different filter for it after jetting as well

Quote:

Originally Posted by psych0hans

With Carb'd bikes Jetting = Tuning. Its one and the same thing.

This makes SO MUCH more sense to me now hahahah

I was just talking to factory pro and they recommend using the CRB-K04-1.0. Kit.

They also recommend a ignition advance as well but I don't quiet understand what that is either.

Jiggles · June 2nd, 2013, 11:46 PM

Get your jet kit from the exhaust manufacturer. Best option

You can get a different filter element if you want, thats not a big change

psych0hans · June 3rd, 2013, 03:37 AM

Quote:

Originally Posted by jmk420

Got it, I will ignore that! I was hearing that I should get a different filter for it after jetting as well

@choneofakind can help you.

choneofakind · June 3rd, 2013, 04:24 PM

Looks like some of the bases are covered.

I'm not needed.

jmk420 · June 4th, 2013, 02:48 PM

Quote:

Originally Posted by Jiggles

Get your jet kit from the exhaust manufacturer. Best option

You can get a different filter element if you want, thats not a big change

I just talked to Leo Vince and they don't have a jet kit they recommend.....

I am planning on purchasing :

LeoVince Kawasaki Ninja 250R 2008-12 LV One Evo II Full System Exhaust

Anyone familiar with this exhaust?

rojoracing53 · June 4th, 2013, 04:44 PM

Quote:

Originally Posted by jmk420

I just talked to Leo Vince and they don't have a jet kit they recommend.....

I am planning on purchasing :

LeoVince Kawasaki Ninja 250R 2008-12 LV One Evo II Full System Exhaust

Anyone familiar with this exhaust?

I have the Leo Vince full system and run the Dynojet stage two kit with #98 dynojet main jets, I also use a K&N replacement air filter(not pods). Ask anyone who's ridden with me and they tell you my bike runs great ALL the time. It even starts stone cold in the winter with no choke needed ever

rojoracing53 · June 4th, 2013, 04:46 PM

Here's what it looks like on the bike after you black it out

Jiggles · June 4th, 2013, 04:47 PM

Quote:

Originally Posted by jmk420

I just talked to Leo Vince and they don't have a jet kit they recommend.....

I am planning on purchasing :

LeoVince Kawasaki Ninja 250R 2008-12 LV One Evo II Full System Exhaust

Anyone familiar with this exhaust?

If you do a track day with Z2 you get 25% off leo vince exhaust systems

rojoracing53 · June 4th, 2013, 04:51 PM

Quote:

Originally Posted by Jiggles

If you do a track day with Z2 you get 25% off leo vince exhaust systems

I just got done doing my first trackday with Z2 at Laguna seca last weekend, very cool crew with a good sense of humor

jmk420 · June 4th, 2013, 05:26 PM

Quote:

Originally Posted by rojoracing53

I have the Leo Vince full system and run the Dynojet stage two kit with #98 dynojet main jets, I also use a K&N replacement air filter(not pods). Ask anyone who's ridden with me and they tell you my bike runs great ALL the time. It even starts stone cold in the winter with no choke needed ever

Oh wow!

Thank you so much for this information!

Much appreciated!

While I am at it... What's this difference between Stage 2 and 3?

So far I know what to buy:

Leo Vince full system

Dyno Jet, Jet kit #98 main jet

K&N replacement air filter.

Am I missing anything else?

Thanks

Jiggles · June 4th, 2013, 05:34 PM

replacement allen head screws for your carbs and a JIS screwdriver for the JIS screws currently in the carbs. I can't remember the size of the allen heads you need

rojoracing53 · June 4th, 2013, 05:48 PM

Quote:

Originally Posted by jmk420

Oh wow!

Thank you so much for this information!

Much appreciated!

While I am at it... What's this difference between Stage 2 and 3?

So far I know what to buy:

Leo Vince full system

Dyno Jet, Jet kit #98 main jet

K&N replacement air filter.

Am I missing anything else?

Thanks

Jet kit comes with the #98 mains but remember to use the #98 mains in the kit because every manufacturer of jets makes their sizes a bit different.

Oh also make sure to run the quite core insert they give you for the can, trust me it will make more power that way

choneofakind · June 4th, 2013, 06:56 PM

Hex screws are M4x16 iirc.

Jason, your winters are like my warm days

rojoracing53 · June 4th, 2013, 07:10 PM

Quote:

Originally Posted by choneofakind

Hex screws are M4x16 iirc.

Jason, your winters are like my warm days

True dat but Cameron is always bitching that his bike won't run without the choke when it cold out

choneofakind · June 4th, 2013, 07:13 PM

Tell Cam he's a nuuuuub! love, chone. But really, why not just go at his carbs to shut him up then? I got mine all tuned right. Ran great in all that lovely weather OH has to offer.

rojoracing53 · June 4th, 2013, 07:21 PM

Quote:

Originally Posted by choneofakind

Tell Cam he's a nuuuuub! love, chone. But really, why not just go at his carbs to shut him up then? I got mine all tuned right. Ran great in all that lovely weather OH has to offer.

Because @CycleCam303 is a cheap lazy bastard that's why

CycleCam303 · June 4th, 2013, 09:50 PM

Because as soon as I buy an exhaust, filter, and re jet, literally a month later I'll be bringing a cbr500r home. Seriously. Ask jason, I got an exhaust for my kawi dirt bike and then a month and change later that bike was gone and in with the Honda. O yea and I'm cheap. Mods are for noobs

lettucedeep · June 7th, 2013, 03:48 PM

Quote:

Originally Posted by Jiggles

and for the love of god whatever you do, don't install pod filters.

Why not? I was thinking about doing this (with a rejet of course) the next time I clean my carbs.

Jiggles · June 7th, 2013, 06:39 PM

Quote:

Originally Posted by lettucedeep

Why not? I was thinking about doing this (with a rejet of course) the next time I clean my carbs.

Pod filters are a bitch to jet for and don't increase your max hp by much if at all

lettucedeep · June 8th, 2013, 07:48 AM

Quote:

Originally Posted by Jiggles

Pod filters are a bitch to jet for and don't increase your max hp by much if at all

Huh... more food for thought I guess, thanks.

jmk420 · June 20th, 2013, 12:43 PM

Quote:

Originally Posted by rojoracing53

Jet kit comes with the #98 mains but remember to use the #98 mains in the kit because every manufacturer of jets makes their sizes a bit different.

Oh also make sure to run the quite core insert they give you for the can, trust me it will make more power that way

I have now been quoted to use "The Stage 2 jet kit 2193 should work well for your application.

http://www.dynojet.com/pdf/2193.pdf"

Is this what you're using? Exhaust has now arrived and now planning on the Jet kit

jman511115 · June 21st, 2013, 03:03 PM

Quote:

Originally Posted by lettucedeep

Huh... more food for thought I guess, thanks.

Jiggles has a vendetta against pods for no real good reason. Read the stickies and form your own opinion.

Jiggles · June 21st, 2013, 05:56 PM

Quote:

Originally Posted by jman511115

Jiggles has a vendetta against pods for no real good reason. Read the stickies and form your own opinion.

No reason except that they are terrible and are marketed as a performance mod when they do no such thing.

choneofakind · June 23rd, 2013, 02:53 PM

They CAN be a performance thing. But only under really ideal conditions and with runners to smooth the air.

The air box also can deliver some impressive numbers, the difference is it does this with less noise and more consistently (temp differences, etc)

indr · June 23rd, 2013, 08:33 PM

I read somewhere that CV carbs (like the ones in our bikes) need smooth airflow. Which is the reason for the airbox and the snorkle positioned how it is. I've also read accounts of unpredictable RPMs when riding in strong cross-wind conditions by those that installed pods after removing the airbox (on other bikes with CV carbs).

June 2nd, 2013, 09:18 PM	#1
jmk420 ninjette.org member Name: Jeff Location: Vancouver Join Date: May 2013 Motorcycle(s): Diavel Carbon / Ninja 250R / 696 Posts: 32	exhaust + jetting? I tried the search and everything is a bit messy I recently purchased a 2009 Ninja 250 for my girlfriend, We are now looking to upgrade the exhaust. I was wondering... Full Exhaust at the moment we are looking at the Leo Vince LV-ONE EVO II Full Exhaust Area P Full Exhaust and Yoshimura Full Exhaust I was wondering if installing these would need jetting also would the bike needed to be tuned? Anyone running these full exhausts mind telling me which jet kit/tune they use? Thanks so much

June 2nd, 2013, 09:22 PM	#2
Jiggles Jigglin' your Jiglets Name: Sean Location: San Jose, Ca Join Date: Jun 2011 Motorcycle(s): 2009 K1300S, 2013 Ninja 300, 2011 Ninja 250R, Faster than Unregistered's ninjette Posts: Too much. Blog Entries: 1 MOTM - Apr '13	You seem to have lost your way my son. Let me help you find jesus once again. __________________________________________________ If the Ninja 250 doesn't have enough power for you, then you don't know how to ride it. AFM #676 Supersports are for n00bs

June 2nd, 2013, 09:22 PM	#3
cuong-nutz RIP Alex Name: Cuong Location: Houston, TX Join Date: Apr 2011 Motorcycle(s): '10 250r, '09 265r Posts: A lot. Blog Entries: 2	Welcome Jeff! Tech Sticky: http://www.ninjette.org/forums/showthread.php?t=5586 Jetting database: http://www.ninjette.org/forums/showthread.php?t=10208 __________________________________________________ HalfFast Racing Team Serving Greater Houston Area Riders:WFO Riders MotoHouston HPC CMRA Ride Smart Fastline Lone Star Track Days

June 2nd, 2013, 09:47 PM	#7
Jiggles Jigglin' your Jiglets Name: Sean Location: San Jose, Ca Join Date: Jun 2011 Motorcycle(s): 2009 K1300S, 2013 Ninja 300, 2011 Ninja 250R, Faster than Unregistered's ninjette Posts: Too much. Blog Entries: 1 MOTM - Apr '13	yes you jet with a full exhaust and for the love of god whatever you do, don't install pod filters. __________________________________________________ If the Ninja 250 doesn't have enough power for you, then you don't know how to ride it. AFM #676 Supersports are for n00bs

June 2nd, 2013, 11:46 PM	#13
Jiggles Jigglin' your Jiglets Name: Sean Location: San Jose, Ca Join Date: Jun 2011 Motorcycle(s): 2009 K1300S, 2013 Ninja 300, 2011 Ninja 250R, Faster than Unregistered's ninjette Posts: Too much. Blog Entries: 1 MOTM - Apr '13	Get your jet kit from the exhaust manufacturer. Best option You can get a different filter element if you want, thats not a big change __________________________________________________ If the Ninja 250 doesn't have enough power for you, then you don't know how to ride it. AFM #676 Supersports are for n00bs

June 2nd, 2013, 09:45 PM	#6
jmk420 ninjette.org member Name: Jeff Location: Vancouver Join Date: May 2013 Motorcycle(s): Diavel Carbon / Ninja 250R / 696 Posts: 32	Hi! Thanks for the quick reply I read that thread but only thing now I am confused with is should I jet after installing a full exhaust? Also any other mods needed after jetting and full exhaust?

June 3rd, 2013, 04:24 PM	#15
choneofakind ninjette.org certified postwhore Name: . Location: . Join Date: Feb 2011 Motorcycle(s): . Posts: Too much. MOTM - Feb '13, Feb '14	Looks like some of the bases are covered. I'm not needed.

June 4th, 2013, 04:46 PM	#18
rojoracing53 Fast-Guy wannabe Name: Jason Location: Brentwood, Ca Join Date: Oct 2011 Motorcycle(s): 2009 Ninja250, 2011 RM-Z250, 2004 NSR50, Posts: A lot. MOTM - Jan '13	Here's what it looks like on the bike after you black it out

June 4th, 2013, 05:34 PM	#22
Jiggles Jigglin' your Jiglets Name: Sean Location: San Jose, Ca Join Date: Jun 2011 Motorcycle(s): 2009 K1300S, 2013 Ninja 300, 2011 Ninja 250R, Faster than Unregistered's ninjette Posts: Too much. Blog Entries: 1 MOTM - Apr '13	replacement allen head screws for your carbs and a JIS screwdriver for the JIS screws currently in the carbs. I can't remember the size of the allen heads you need __________________________________________________ If the Ninja 250 doesn't have enough power for you, then you don't know how to ride it. AFM #676 Supersports are for n00bs

June 4th, 2013, 06:56 PM	#24
choneofakind ninjette.org certified postwhore Name: . Location: . Join Date: Feb 2011 Motorcycle(s): . Posts: Too much. MOTM - Feb '13, Feb '14	Hex screws are M4x16 iirc. Jason, your winters are like my warm days

June 4th, 2013, 07:13 PM	#26
choneofakind ninjette.org certified postwhore Name: . Location: . Join Date: Feb 2011 Motorcycle(s): . Posts: Too much. MOTM - Feb '13, Feb '14	Tell Cam he's a nuuuuub! love, chone. But really, why not just go at his carbs to shut him up then? I got mine all tuned right. Ran great in all that lovely weather OH has to offer.

June 4th, 2013, 09:50 PM	#28
CycleCam303 King Hamfist Name: Cameron Location: NorCal East Bay Join Date: Oct 2012 Motorcycle(s): 2007 Crf 150R, 2011 Hypermotard 796 Posts: 940	Because as soon as I buy an exhaust, filter, and re jet, literally a month later I'll be bringing a cbr500r home. Seriously. Ask jason, I got an exhaust for my kawi dirt bike and then a month and change later that bike was gone and in with the Honda. O yea and I'm cheap. Mods are for noobs

June 23rd, 2013, 02:53 PM	#35
choneofakind ninjette.org certified postwhore Name: . Location: . Join Date: Feb 2011 Motorcycle(s): . Posts: Too much. MOTM - Feb '13, Feb '14	They CAN be a performance thing. But only under really ideal conditions and with runners to smooth the air. The air box also can deliver some impressive numbers, the difference is it does this with less noise and more consistently (temp differences, etc)

June 23rd, 2013, 08:33 PM	#36
indr ninjette.org guru Name: . Location: . Join Date: Nov 2010 Motorcycle(s): . Posts: 331	I read somewhere that CV carbs (like the ones in our bikes) need smooth airflow. Which is the reason for the airbox and the snorkle positioned how it is. I've also read accounts of unpredictable RPMs when riding in strong cross-wind conditions by those that installed pods after removing the airbox (on other bikes with CV carbs).

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