I’m not an expert, so don’t go by anything I say, but some top builders have told me that its all in the carb on the X30. Can’t do much to the engine itself, so what little you might be able to get, is in the carb. This is all subject to change though, as the builders keep working on it and pushing the limits.
KartLift Kart Stands
DeepSeat Kart Seats
877-777-8020
------------------
Don't bother PMing me, it doesn't work. Email is best: tim@kartlift.com.