Description
Turn around time is usually 2-4 days
Pulley Spacer
Fits all 323
BMW Part Number 63121387884
MSS54 to MSS54HP ECU Conversion Service Options:Repair Service Turn around time is usuallyConvert your standard MSS54 ECU into an MSS54HP. MSS54HP DME is a necessary part needed to run the MAP sensor so common with properly converting the S54 with a CSL airbox. AM29F400BB (50ns) EEPROM installation. OEM MSS54HP DME software Additional options free of charge: VIN matching, EWS delete. Standard Service: An MSS54 ECU must be supplied with this service. A ship to address will be emailed after an order is placed. Turn around is 1 2 business
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
























