i have an 05 raptor. its got a big gun evo x full exhaust but im not gettin the power from it i think could be reached. i think the shop messed up the jetting. but i want it to haul *** but dont want to bore it. i was think valves, cam and HC piston. if someone can help me out with gettin my quad fast as hell then thatd be cool

 

first get the jetting right, believe it or not that will make a big difference.

 

I heard that the big gun computer makes a big difference on a raptor with mods.

 

Maybe with major modifications and a pretty aggressive cam, assuming the low end advance isnt so high that the engine falls apart.

 

try a different exhaust. Why break into you motor what you can obtain similar hp gains by switching to a better pipe.