Originally Posted by
JamminSP
Im running the thinnest shim, have recently installed a 7mm restrictor and am only using about 60% of the throttle throw. Im running VooDoo 30% nitro and a VooDoo #6 plug (p4) I had heard also that the RE10 pipe was a better suit for this engine but havent had the chance to try it.
Well your ambient conditions are similar to AZ so it can only be the pipe, your track surface, your trigger finger or your tune. Try negative expo on your throttle servo. That may help smooth things out and get you better run time. There are never any guarantees that one guys 10 minute engine will get the same run time from another driver on another track, but so far everyone but you is claiming fantastic run times with this engine so I think there is a reason for that.