slip-on exhaust

KVR · April 11th, 2009, 04:32 PM

is it required to have a FP jet kit when running a slip-on exhaust? Im more worried about engine life than performance. Running a slip-on without a FP jet versus with a FP jet kit. which set up maximizes engine life?

Thank You

kkim · April 11th, 2009, 05:35 PM

I'd say a jetting change will help engine longevity by helping the engine to run at a less lean (hot) condition. These engines are set pretty lean from the factory as it is...adding a slip on leans it out even more.

No need for a jet kit, though... shimming the needles will richen the mixture where it needs it most... in the low and midrange.

have you read this?
http://www.ninjette.org/forums/showthread.php?t=9465

mike_sema · April 11th, 2009, 07:40 PM

April 11th, 2009, 04:32 PM	#1
KVR BALANCE:::GRACE:::CONTROL Name: KVR Location: West Join Date: Feb 2009 Motorcycle(s): (08 Ninja 250R Kawi Green but currently a project since Jan 31, 09;) 2007 Honda CBR 600RR White Posts: 42	slip-on exhaust is it required to have a FP jet kit when running a slip-on exhaust? Im more worried about engine life than performance. Running a slip-on without a FP jet versus with a FP jet kit. which set up maximizes engine life? Thank You

April 11th, 2009, 07:40 PM	#3
mike_sema ninjette.org guru Name: mike Location: tucson az Join Date: Dec 2008 Motorcycle(s): ninja 250r Posts: 371	__________________________________________________ 08 250R: sportisi VR full exhaust, Dynojet, custom seat, kleen air rmvd, rim tape, grips, fender chop,zg db windscreen,k&n air filter,15t front sprocket,sportisi-usa clipons,solo seat cowl

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April 11th, 2009, 05:35 PM	#2
kkim Join Date: Nov 2008 Posts: Too much.	I'd say a jetting change will help engine longevity by helping the engine to run at a less lean (hot) condition. These engines are set pretty lean from the factory as it is...adding a slip on leans it out even more. No need for a jet kit, though... shimming the needles will richen the mixture where it needs it most... in the low and midrange. have you read this? http://www.ninjette.org/forums/showthread.php?t=9465