Bootmod3 ECU Tune – BMW B48 / B46 (230i / 330i / 430i / Mini JCW) S4 5 transmissions may be equipped

5 transmissions may be equipped with an advanced security lock

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Increasing the RPM limit allows your matching IE Stage 1 or Stage 2 tune to make power higher into the RPM range fully unlocking the hidden power available at higher shifts

19 sec map switch)

Bootmod3 ECU Tune – BMW B48 / B46 (230i / 330i / 430i / Mini JCW) S4 5 transmissions may be equippedThe Bootmod3 (BM3) ECU Tune redefines tuning for BMWs turbocharged B48 and B46 engines, giving you full calibration control and instant flashing through the OBD port. Whether stock or full bolt on, Bootmod3 delivers significant power gains, improved throttle response, and advanced tuning features, all while retaining OEM driveability and safety systems. CustomROM Features Map Switching (On the Fly): Instantly switch between up to four maps using