Originally Posted by BimmerMat135
I'm not 100% sure on that one but the dinan stage 2 without intercooler upgrade give you 378hp and 415ft-lbs at the crank. Stock 1M have been dynoed to 331rwhp and 362rwtq so basicly the same as the stage 2 at the crank. I don't think it worth 1995$
The numbers on the 1M stock has over boost temporarily. The 1M stock is equivalent to a Dinan stage 1 tune. The stage 2 changes fuel pump, oil cooler, boost, water pump ect and then lowers the boost at high revs to perserve the engine. There is no over boost because their is no time limit on the duration of increased power. I had the stock, and I drive the Stage 2 and I can tell you from my experience and 4 track days so far with 5 hours on the track each time there is a major difference between stock and Dinan 2.