when i bought it, it had a custom air filter and some cheep crappy exhaust on it. just got rid of the exhaust and bought a doppler s3r, and realised that there was not enough air going through the filter to power the exhaust . took off the filter and it ran fine. went and baught a doppler air filter, it runs.. but not to how i want.. seems like there is a massive loss of power... could this be cause of the jet size? cheers
If it's just a standard bike with an exhaust you should run the standard air box. Otherwise the cylinder will be getting more air and fuel than it can burn off even when all the jetting is as correct as you can get it. It should have been upjetted for the filter so you should down jet when putting the air box on.
its not standard, it had previously been up jetted.. but i never got told what size.. even with the old exhaust the standard air box would not run with the exhaust on
your jets are definately too big so you will have to downjet not too much though and you should go lighter on the rollers
