{"product_id":"m-engineering-ecu-tuning-991-1-gt3-gt3rs","title":"M-Engineering - ECU Tuning (991.1 GT3 \/ GT3RS)","description":"\u003cp\u003e\u003cstrong\u003eDesigned to Fit\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e2014-2016 Porsche 991.1 GT3 \/ GT3RS\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eProduct Description\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eWith the M-Engineering ECU flash for the Porsche 991.1 GT3 and GT3RS, a\u003c\/span\u003e\u003cspan\u003edjustments 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.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eWe have b\u003c\/span\u003ease ECU Calibrations supporting the following vehicles, click on the link for the Calibration Notes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca title=\"Porsche 991.1 GT3 Calibration Notes\" href=\"https:\/\/m-engineering.atlassian.net\/wiki\/spaces\/MENGINEERI\/pages\/367165445\/Porsche+991.1+GT3+Calibration+Notes\" rel=\"noopener noreferrer\" target=\"_blank\"\u003e991.1 GT3\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca title=\"Porsche 991.1 GT3 RS Calibration Notes\" href=\"https:\/\/m-engineering.atlassian.net\/wiki\/spaces\/MENGINEERI\/pages\/367493155\/Porsche+991.1+GT3+RS+Calibration+Notes\" rel=\"noopener noreferrer\" target=\"_blank\"\u003e991.1 GT3 RS\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eMaps are available in Stage 1 and Stage 2 configurations in 91, 93, 100, and E85 fuels. \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eOptions below can be chosen individually. M-Engineering also provides\u003cspan\u003e \u003c\/span\u003e\u003ca title=\"PORSCHE 991.1 GT3 \/ GT3 RS PDK TUNING\" href=\"https:\/\/www.m-engineering.us\/collections\/991-1-gt3-gt3-rs\/products\/porsche-991-1-gt3-gt3-rs-pdk-tuning\"\u003ePDK Tuning\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003efor the 991 platform. There is a discount to the entire tuning suite if purchased together\u003cspan\u003e \u003c\/span\u003e\u003ca title=\"PORSCHE 991.1 GT3 \/ GT3 RS CUSTOM FEATURE PACKAGE\" href=\"https:\/\/www.m-engineering.us\/collections\/991-1-gt3-gt3-rs\/products\/porsche-991-1-gt3-gt3-rs-custom-feature-package\"\u003ehere\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLive Map Switching\n\u003cul\u003e\n\u003cli\u003eMap Switching allows the driver to independently select power levels based on the octane of the fuel or fuel type by using the cruise control stalk. Map switching can be performed with the vehicle running without the need to shut the engine off.\n\u003cul\u003e\n\u003cli\u003eExample Map Slot Setup:\n\u003cul\u003e\n\u003cli\u003eSlot1 - Stock Power\u003c\/li\u003e\n\u003cli\u003eSlot2 - 93 Octane\u003c\/li\u003e\n\u003cli\u003eSlot3 - 100 Octane\u003c\/li\u003e\n\u003cli\u003eSlot4 - E85\u003c\/li\u003e\n\u003cli\u003eSlot5 - Valet\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eSince Map Switching can be customized depending on the individual please contact us when purchasing if you'd like a different setup or would like a custom map slot.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePLEASE NOTE - FOR THIS PRODUCT WE WILL NEED YOUR ECU SHIPPED TO M-Engineering.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAbout M-Engineering\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1429\/9246\/files\/M-Engineering_240x240.png?v=1614194736\" alt=\"M-Engineering Logo - Flat 6 Motorsports\"\u003e\u003c\/p\u003e\n\u003cp\u003eWe are a group of automotive enthusiasts who push the envelope of stock ecu advancements in modern automotive supercars. M-Engineering was started with a goal of providing a much needed service to the aftermarket industry. We strive to make sure that we are on the leading edge of development and calibration. No matter the platform, we are here to help with reverse engineering, hardware design, software design or calibration. We can do it all. Contact us and let us know how we can help you!\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"M-Engineering","offers":[{"title":"2014-2016","offer_id":52390777127214,"sku":null,"price":3000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1429\/9246\/files\/Screenshot_2026-08-04_213239.png?v=1785893626","url":"https:\/\/flat6motorsports.com\/products\/m-engineering-ecu-tuning-991-1-gt3-gt3rs","provider":"Flat 6 Motorsports - Porsche Aftermarket Specialists ","version":"1.0","type":"link"}