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had mine for a month now. so such bahaviour, setting stays put. I know because the acceleration is more pronounced than stock (i'm on Map 2 - 60% throttle remapping, performance tuning on)
I assume your not pressing the gas pedal before you turn it on (which resets the PBX)...
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328i Sports Pkg, Michelin PSS on Staggered 18" OZ Ultraleggeras
. BMS Powerbox. Cyba scoops + Rev motoring intake hose + charcoal delete. Wavetrac LSD
. M3: subframe bushings + sways + control arms (fr & rr). Meyle rear toe arms. M3 diff fr bushings
. BMW Perf: v2 springs + v1 dampers. Valeo SMFW+clutch. 034 MotorSport engine mounts
. Short Shifter + Turner PU bearing + ZHP M weighted shift knob. CDV delete
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