ESS F1X M5 / M6 Stage 1 E-Flash Performance ECU Software

ESS S63TÜ Stage 1 Performance E-Flash ECU Software 700+ HP / 680 lb-ft tq

The E-Flash S63TÜ software is a full OBD2 solution that does not require sending in the ECU or opening the ECU in any way.

Expert calibrated ESS Performance ECU software for the 2012+ M5/M6.

Adds ~90-100hp and ~90ft/lbs of torque over stock M5/6. (75hp and 85ft/lbs on Performance Package M5/6)

This software is calibrated to the maximum capacity of the OEM hardware. This software should not be used with additional piggybacks of any kind as it is already fully tuned through ECU software directly.


Available options :

• Removed top speed limiter.
• Removed cat check option for off-road use (not available for customers in California).
• Removed cold start cat heat up cycle (not available for customers in California).
• Linear torque option for less bottom end torque gain to aid tire grip

Fitment: