Quote:
Originally Posted by injoeyit13
Had my JB4 on the car for 800 miles now! Working great and beating up on some 800hp hell cats on map 2.
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Glad to hear it! The JB4 is the only F90 M5 tuning solution out that you can install and remove at home in 20 minutes. Only solution that includes full CANbus control for advanced tuning. Only solution that includes direct wastegate control for more aggressive power levels. Only solution that lets you change maps or disable in dash using the BC button. Only solution that lets you read and delete fault codes should the need arise. Only solution with free firmware updates for more powerful maps, features, and functions as BMS adds them. Just to name a few.
Mike