The ECU (MEDV17) in the M5 is not new and is tunable. The only problem is cracking the RSA signature when writing to the ecu. Seems like only a couple of tuners have managed to do this. I am sure it wont be long before everyone is doing it.
Reading the ecu is easy as is writting but you get the RSA sig wrong and the car wont start.
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540i
GTR-R35, F90 M5, X3MC, RS3, RS7, M5, S7, S3, RS3, RS6, GTR R35, 996 Turbo, M5, RS6 V10, Cayenne Turbo S
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