i got a new set of pro circuit factory sound silincers with brand new packing. they are on my pro circuit platinum series head pips. i had some off brand unknow silincers on my bike befor that had no packing in them it ran fine with those on it them then i put on my new silincers and it started poping and shooting flames out both cylinders evey now and then, and it wont idel worth shit. wondering if because of the more restrected air flow if it could be my jetting?
my mods include cascade port and polish, 2 into 1 K&n, +3 timing, .20over, one peace hot rods stock stroke crank, high tenchion springs, street bike clutch pads, pro circuit pips.