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redsnapper · May 11th, 2016, 10:11 PM

I'm running 120 Main jet with no issues, and feel I can go even higher.

I have the 6 Inch Uni Pod filters, but it seems to be using a ton of fuel.
Wondering if it's worth switching to the smaller K&N R-0990, would it give me the same power and save me fuel?

Most people I've read are using 110/112 Keihin Main Jets with the K&N filter.

How's my specs;

Testing at +15C/59F to 20C/68F

YEAR: 2009 250R

INTAKE MODIFICATIONS: Kleen air delete. Uni filter Dual Foam 6 inch UP6200ST with PVC pipe as intake runner. The Pod filters are about 1 inch away from the battery box. I wanted to make sure the back of the pod filter airflow was not blocked by the battery box. The bracket back/under the gas tank with the four bolts, I had to grind down, because it had tabs for the old airbox, and was pinching my 6 inch pod filters

EXHAUST MODIFICATIONS: Stock

JET KIT: Dyno Jet

BRAND OF JET KIT: Dyno Jet Stage 3 #2393

MAIN JET:
DJ114/Keihin 120

PILOT JET: Stock #40

NEEDLE AND CLIP POSITION: 3 1/3 DJ needles with clips at the 3 position with 3 washers on top, and 1 washer under clip, which would make it needle position 3 1/3. Previously had it on 4th position but when it got warmer mid range bogged..

MIXTURE SCREW SETTINGS: 1.25 turns out.

ELEVATION: 75-646 feet.

Temperature: +15C/59F to 20C/68F

MISCELLANESOUS INFORMATION ABOUT YOUR BIKE’S JETTING SETUP:
Installed block off plate, Removed Air injection into exhaust to get rid of backfiring.

Had DJ112/Keihin 117 and Plugs were white at WOT. Switch to DJ114/Keihin 120 Main jet and #40 Pilot Jet. Bike pulls a tiny bit harder than previous. Might Try A DJ116/Keihin 122.5 to see what happens.

May 11th, 2016, 10:11 PM	#254
redsnapper ninjette.org member Name: Red Snapper XXX Location: Red Snapper City Join Date: Nov 2013 Motorcycle(s): Ninja 250R 2009 Posts: 39	Eating fuel, should I switch to a smaller K&N Filter? I'm running 120 Main jet with no issues, and feel I can go even higher. I have the 6 Inch Uni Pod filters, but it seems to be using a ton of fuel. Wondering if it's worth switching to the smaller K&N R-0990, would it give me the same power and save me fuel? Most people I've read are using 110/112 Keihin Main Jets with the K&N filter. How's my specs; Testing at +15C/59F to 20C/68F YEAR: 2009 250R INTAKE MODIFICATIONS: Kleen air delete. Uni filter Dual Foam 6 inch UP6200ST with PVC pipe as intake runner. The Pod filters are about 1 inch away from the battery box. I wanted to make sure the back of the pod filter airflow was not blocked by the battery box. The bracket back/under the gas tank with the four bolts, I had to grind down, because it had tabs for the old airbox, and was pinching my 6 inch pod filters EXHAUST MODIFICATIONS: Stock JET KIT: Dyno Jet BRAND OF JET KIT: Dyno Jet Stage 3 #2393 MAIN JET: DJ114/Keihin 120 PILOT JET: Stock #40 NEEDLE AND CLIP POSITION: 3 1/3 DJ needles with clips at the 3 position with 3 washers on top, and 1 washer under clip, which would make it needle position 3 1/3. Previously had it on 4th position but when it got warmer mid range bogged.. MIXTURE SCREW SETTINGS: 1.25 turns out. ELEVATION: 75-646 feet. Temperature: +15C/59F to 20C/68F MISCELLANESOUS INFORMATION ABOUT YOUR BIKE’S JETTING SETUP: Installed block off plate, Removed Air injection into exhaust to get rid of backfiring. Had DJ112/Keihin 117 and Plugs were white at WOT. Switch to DJ114/Keihin 120 Main jet and #40 Pilot Jet. Bike pulls a tiny bit harder than previous. Might Try A DJ116/Keihin 122.5 to see what happens.