Porsche 991.1 GT3 / GT3 RS ECU Tuning

With the M-Engineering ECU flash for the Porsche 991.1 GT3 and GT3RS, adjustments are made to improve the throttle response, remove top speed limiters, adjust air/fuel ratios, and modify ignition timing and much more to improve the overall driving performance of the 3.8L and 4.0L flat-six engine. M-Engineering still utilizes all OEM ECU engine safety strategies.

We have base ECU Calibrations supporting the following vehicles, click on the link for the Calibration Notes:

• 991.1 GT3
• 991.1 GT3 RS

Maps are available in Stage 1 and Stage 2 configurations in 91, 93, 100, and E85 fuels.