BMW (F8X) M3/M4 ECU Tuning SoftwareBMW F80 M3 BMW F82 F83 M4 (2015 2020) The M3 and M4 HEX Tuning ECU performance software unlocks the full potential of your stock or modified vehicle. All tunes come with the standard GTS features listed below. GTS Features GTS Top Speed Limiter (Set to 192mph) GTS Sport Display Power Level GTS Start up Sequence Roar GTS* Throttle Overrun Exhaust Burble Burble controlled by factory drive mode COMFORT No Burble SPORT Soft Burble SPORT+ Loud Burble
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