The S58 platform has been a proven powerhouse since its original release in the X3M. The only thing holding many owners back from unleashing the true potential is the unlocking process of the DME. With the help of the DAHLer ECU module, the lengthy process of removing the DME and sending it overseas is negated! Paired with the DAHLer exhaust valve controller and our PSI G87 Midpipe, this whole combo helps release the true sound and potential of these S58s.