[cryosamurai]

im lookin at a yoshimura muffler and a K&N air filter.....stage one jet kits are for bikes with exhaust...now am i going to run lean if i slap on the muff and filter?..without the jet kits...i ride the 2006 ZZR600 (four carburators) ...i want more power:crazyloco but not at a blown motor expense of course.:banghead .any info helps thanks guys!! ...

 

[Shortcircuit]

Usually freeing up the intake side means jetting up to compensate, therefore yes it will run lean. Does K&N not recommend jetting changes?

Suggest that you get the bike set up on a rolling road if you can for best results.

 

[cryosamurai]

im not sure what k&n says...but i just asked my kawa. dealership today and ya they said with the can and air filter i would deff. be running lean!!. but just an exhaust will be ok..so i gotta wait until i can get the money for both the jets and the air filter together..jets are gonna run me just under 300 bucks for everything including instal..man!!

 

[berettagtz117]

Do it all it once.. You will be worry free and like the performance you get when you do it all @ once