well i know this has been asked alot. but my case is a little different. first of all here are the stats. removed air scilencer, gutted cats. next mod:free flowing exhaust kind of the SCP 2.5-3-2.5 setup. then a 3.5 fresh air. then a overdrive for the 'charger. so what do you guys think would be the best because this motor is very new (has 260 miles as we speak). i dont know if the 10% is bad with stock manifolds or what but i was thinking with gutted cats and a better exhaust it would be ok. what boost psi are we talking with the 10% anyway? right now i am running 11. thanks for your input!