This is Not a Normal M3 ECU. This is a NEW MSS54HP (High Performance) ECU. These ECU's are rare and there is a Limited Quantity in RPM MOTORSPORT LTD.
This is a BMW Complete ECU Kit for Series E46 M3 with a S54 MSS54HP Engine With an ELECTRIC Throttle Body. (Years 99 and up). This Kit includes a SIEMENS DME Engine Management 1 ECU, 1 EWS (Anti Theft Module) and Type of Keys based on the answers you choose in the option menu above.
Siemens Supported Part Numbers (MSS54HP) :
7837805 - 7835564 - 7836454
(Please note that BMW Part numbers or Hardware ID's are NOT as important as the word MSS54HP)
BMW 3 Series (Coupe) E46 M3 From 01/2000 To 05/2006 DME MSS54HP Siemens.
BMW 3 Series (Convertible) E46 M3 From 01/2000 To 05/2006 DME MSS54HP Siemens.