Scent Test - If you can odor burned components, the ECU is probably going harmed. Should you have performed the above mentioned checks or Should you be Doubtful When your ECU is faulty, we can easily provide an extensive ECU check. Crucial - the OP2 now employs a customized driver https://donovanhtbhn.yomoblog.com/32820487/the-best-side-of-bmw-e90-ecu-replacement-cost