MSS54 / MSS54HP Full CSL Hardware/Firmware Conversion

Convert your MSS54 or MSS54HP to run the full BMW CSL software. This conversion also allows for use of the OEM CSL air flap and a MAP sensor when you use the CSL air intake box. This software is the most superior base for tuning your S54 without a MAF. Ideal for CSL airbox, ITB stack kits, or simply just MAF deletes. -- Convert your MSS54 or MSS54HP to full OE CSL spec with this conversion. We add the necessary capacitors and H-Bridge to the boards so that all S54 CSL functionality is retained including the stock OE motorized intake flap if desired.  **IMPORTANT** ISN’s are reset so EWS needs to be reset or deleted, meaning you will need a tool that can realign the EWS once you receive the DME back to get the car started. *SO BY DEFAULT WE JUST SEND THESE WITH THE EWS DELETE* .  The full CSL firmware is BDM’d directly onto your ECU. This is not a hamstrung cobbled together firmware, this is a genuine CSL full binary. MSS54 NON HP cost $255 to upgrade to genuine HP DME’s. **Performance