Proudly serving Porsche owners throughout the Inland Empire including Montclair, Ontario, Claremont, Upland, Rancho Cucamonga, Pomona, San Dimas, and Riverside, CA.
Conveniently located at the 10 fwy and Central Ave exit.

Description
Now available at 911 Design — the M-Engineering ECU Tuning with Live Map Switching for Porsche 911 992.1 GT3 and GT3 Touring. Professional installation available at our Montclair, CA facility.
With the M-Engineering ECU flash for the Porsche 992 GT3 and GT3 Touring, 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 4.0L flat-six engine. M-Engineering still utilizes all OEM ECU engine safety strategies.
We have base ECU Calibrations supporting the following vehicles:
- 992.1 GT3
- 992.1 GT3 Touring
Stage 1: +30whp +25wtq
Stage 2: +40whp +30wtq
(pump gas, dependent on quality of fuel and mods)
Live Map Switching
Map Slots
Slot 1 - ACN91 (Arizona, California, Nevada 91)
Slot 2 - 91 Octane or 95RON
Slot 3 - 93 Octane or 98RON
Slot 4 - 100 Octane or 103RON
*M-FLASH requires a bench procedure which requires the ECU to be sent to M-Engineering HQ.
TYPICAL TURNAROUND TIME IS USUALLY 24 HOURS AFTER RECEIVING.
Many of our products are built to order and/or shipped directly from the manufacturer to ensure authenticity and quality. After your order is placed, our team will promptly confirm availability and provide an estimated delivery timeframe. If you have any questions regarding product selection or your order status, please do not hesitate to contact us.