dodgeram
07-25-2004, 05:30 PM
I have a 04 trx450r and I am going to take the airbox lid off and run a k&N airfilter with an outerwear, I also have a larger exhaust hole, like what comes with the hrc kit. Will I need to adjust the needels, or should a main jet be sufficient? I was thinking somewhere along the lines of a 170-175 main.