ok...I'm going to Glamis next weekend for the first time with the new machine. My buddy has a 2004 660R with modded intake and full CT Racing exhaust. Am I going to be able to take him going up Olds or not? I'm running the PC3 with ProDesign intake k&n filter and STOCK EXHAUST. Still waiting for my LTE duals. We both run skat trak haulers and he weighs about 10 lbs less then I do. I know when I race him with my Predator its pretty much dead even. But my Predator has full exhaust and a couple of carb mods. The CTRacing exhaust on his Raptor was the biggest improvement to any motorcycle or ATV from stock I have ever seen.