My son just ordered a pro circuit pipe and was wondering from anybody who has one....if he runs the stock filter with the air box cover off will he need to change jetting?...he talked to the dealer they said to run it and see... we are at 3300 feet here but will be ridding at sand mountain and coos bay.. if U have a opinion feel free to express it..thanx in advance...

 

I think the stock paper filter is so restrictive no jetting should be needed. When I put the Uni filter in it was really lean, went with 175 mj and put clip in bottom groove on needle.

I would highly recommend an aftermarket filter and jetting to get a little better performance to go along with the sound!!

 

Ok that makes sence..will work from there..tnx..