If they can get it fixed, which I dont think they are even trying too it would be worth it, it imporved my 1/4 mile .2 and helped out autocrossing due to the more torque, it would not hold gear like stated and the a/f spikes are just not worth it. I dont think rasing the limiter would fix the spikes but thats another argument. We sent ours back and forth to Jerry about 4 times before we just gave up and lost a good little bit of money. I suggest staying away from the tune, put the money elsewhere