Originally Posted by teagueAMX
If you really want performance, and it sounds like you do, the 35i + Dinan is the way to go. The 35is power increase is a momentary blip when you consider the Dinan Statge II.
but you can JB4 the 35is. Not sure why everybody is so hot on dinan. Some of us lived through the E39 M5 saga with Dinan and it was ugly. If you don't know what I am referring to, google it.