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hi i was just wodering i just brought a kn air fliter i had normal one before now the bike is starvining at 5 thousnad rpm do i incress the fuel or what do thinks going on

When using a K&N air filter,you are suppose to re-jet and go with (Dyno-Jet Stage 3)You will pay about $125.- for the jet kit.you'll get better performance over all outta your bike!.For instance I tryed the same thing using my stock air box.Later switched to 4-single K&N filters and OMG what a change.But since then my 1992 Suzuki 1100 Katana has had a big make over.I've added a 1349 stroker kit & Flat slide carbs with K&N filters.So my 1100 is plus 249.It beats a stock Busa with ease..But not for sale..The bike tops out at 240 with race fuel and and around 225 with regular gas give or take a few..

hi ive got the same sort of peoblem ive got a gsxr 7/11 cv carbs k&n filters on back of carbs 135 main jets but give it a handfell she bogs down

You need to post more info. Bike model would help. Is it carb-ed? Did you just put on a new oil k&n filter? You do know those filters need to be oiled. Is it in the factory filter box? Pull a plug and tell us what it looks like (oiled or burnt white).

Not knowing what bike you have, i'm assuming it's carburated. If so, get a rejet kit or take it and have it rejetted.

I know with mine, i had the same problem and it fixed it.

-S-