Mike's 2003 YZ250 said:So since my bike is 100% stock, I shouldnt use it. I should only use it if I start modifying the bike.
Not necessarily. We just rebuilt my son's 03 RM125 with a bone stock engine (aftermarket pipe and silencer) and jetting where we thought it was pretty good but still a tad on the safe side of rich (the jetting not Rohrich :laugh: ) The piston showed mild signs of detonation, it had been run since new on Premium pump and Yamalube2R at 32-1. The mechanic who helps out our race team suggested after looking at the piston we either go to mix of race/pump fuel or start using some of the unleaded version of THIS PRODUCT. Due to cost factors we are trying a trial batch of the Torco accelerator instead of the blend of pump/race fuel. Unfortunately I haven't been able to find any technical info on the Torco product or get any feedback other than from a couple of local wrenches who use the product. We ran it last weekend and didn't notice any difference in performance. I guess the real answer will come at the next re-ring when we can see if we are still getting mild detonation.