Well I am thinking about getting a Stage 1 Hotcam in my 2004 YFZ 450. If I get a cam do I have to get any other parts so the cam runs to its maximum potential or do I have to get any other parts that could be too weak for the cam or anything? How much power should it add? If my friend has a 2003 Raptor 660 with a full Pro Circuit T-4 exhaust, jet kit, k&n and a Stage 1 hotcamn and mine has a 2004 YFZ 450 with a Sparks Full Exhaust, jets, k&n and hotcam stage 1, which should win? Does a cam make more of a differenace on any certain quad or does it do the same to all quads?