I've got the ford racing cams & heads, aFe CAI, and Stainless works headers/exhaust. Had a local guy try to tune it and it was sitting just over 300 hp at the wheels, but his tune was complete crap. Ordered a tune from 5Star and while it was better than the dyno tune the truck was still running really rough and I was having problems with throttle response during slow acceleration. So I ordered a tune from JDM. I've had no problems with the truck since installing it, but haven't been able to get it back on a dyno since then.