I don't thrash on it, and I'm only running stock+20 HP. Not too worried, I'm 41 not 21, but want to be prepared. Only ran the SCT for @ 500 mi. so far, ran the MSE for @100 of those miles. Actually just trying to get some better fuel mileage, and the tranny shifts much crisper with the Spartan tunes. Thanks for the reply!