Well I just got my car out from limp mode the other day. I found out that my injectors were clogged/dirty. I read from some places that it could be from dirty gas or from gas that has ethanol. The way people on the M forums have been getting around this is either getting gas from ethanol-free gas stations or adding 2oz of Starbrite Star Tron fuel additive to their tanks every other fill up. Supposibly cleans out your whole system and removes the water from the ethanol build up. I just ordered a 32oz jug of that shit.