help has anyone fitted a 99 4xv r1 engine into a car, i need some information on carb set up i have put an itg air filter and it sounds awfull regards nige:

What else have you done to it ? It was designed to run with the manufacturers airbox, by fitting a different filter it is now probab;ly drawing air a lot easier than it expects.

Speak to andy from abperformance, althought he is a blade guru theres not a lot he dosn't know about modifing bike engines.

Suspect you will need to block a few air corrector holes and fit a dynojet kit.

We did sucessfully run ChrisS's j55 on its original airbox ( turned upside down) without any issues or need for adjustment. It even passed SVA emissions with the MK loan cat.

Best bet phone andy tomorow, he will point you in the right direction


ab performance linky

Regards Roger

thankyou