went to little sahara last time, dude at the dyno told me that the ron woods full exhaust kit tested the best. he also tested an Nmotion pipe,yoshimura, and some others( i want the best) going back to the dunes in 3 1/2 weeks. only mods i made was taking my baffle out and putting a pro-flow k&n on it and i also got some new paddles itp sand stars help anyone.