One of the most common failures of N54 powered BMWs is MSD80 (DME aka ECU). Usually MOSFETs inside the DME fail on load. 


This is when you should upgrade your MSD80 to MSD81. You only need to send us your DME module or CAS module with one of your keyfobs.


You can also send us your injectors flowing rate numbers and we can code them in before sending your items back to you.


Turn around is the SAME DAY! 


YES! You send us your DME or CAS + KEY then we return them back to you SAME DAY!



Please Click HERE to learn about how to remove your CAS module.


MSD81 Upgrade

  • %25 restocking fee is applied to all returned items that are in working condition if returned in 30 days from date the purchase was made.