mine came with a PSI pipe that needed a rechrome and a new silencer.  i have stock bore and carb/ it was amazing!!! i bought the scp and its nearly the same but i little fatter. i havent tried the scp yet... im afraid i will be disapointed till the engine is ported and the plus 2mm piston is added. 

the plan now is to drive the psi pipe till i need more power i guess cause the psi rocked my world and i loved the sound and top end and midrange.  on a stock bike anyway.

- my friend has a stock lt500 and he keeps saying that when i open it up he cant catch me..... but i feel the same way about his lt500..... so i think it more about who gets on the gas sooner. they are both intimidating to most any other quads.
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i have alot of personal experience with porting/ so whats the deal? should i ask matt shearer how to port to match the pipe?