Porsche 911 GT2 RS 3.8 TT ECU Tuning – Optimized Performance | 991.2 2019

This isn't a generic flash. Our 911 GT2 RS calibrations are developed in-house, optimized on the dyno, and tested on the street and track. Every map is built around your fuel, your hardware and how you actually drive the car — maximum power with factory-level refinement and reliability.

Estimated on a healthy car with known-good fuel:

• 690 hp → 765 hp — estimated gain of +75 hp
• 553 lb-ft → 633 lb-ft — estimated gain of +80 lb-ft
• Fuel maps available for 91, 93 and 100 octane
• Adjustable throttle response and boost timing
• Calibrated for consistent performance in all conditions

The 991.2 GT2 RS runs the 3.8L twin-turbocharged flat-six built by Porsche's GT department — rear-wheel drive, water-injected, and the most powerful road-going 911 of its generation. This is the rare case where a GT car responds like a turbo car rather than like a GT3, because it is one: there is boost to work with, and the factory file still carries margin for worst-case global fuel. At +75 hp and +80 lb-ft this is the largest gain of any car in our GT range.

Given the value and limited production of these cars, we would rather speak to you before you order than after. Get in touch and we will confirm exactly what your car needs.

What's included:

• Custom ECU calibration developed around your fuel, hardware and driving preference
• Optimized boost, ignition timing and fuelling for your specific car
• Throttle response and drivability refinement
• Fuel map matched to the octane you actually run — 91, 93 or 100
• OBDII data cable shipped to you
• Same-day file turnaround once we have your stock read

What we need from you:

• Your factory stock file, read with the cable we send you
• A complete list of current modifications
• Vehicle details and VIN
• An honest description of the car's mechanical condition and service history
• The octane you run day to day

Supported Vehicles:

• Porsche 911 GT2 RS (991.2) — 3.8L twin-turbocharged flat-six, 2019

How to order:

• 1. Order online. We ship you an OBDII data cable — typically 2–3 days to arrive.
• 2. Read your stock file. Plug the cable into your OBD port, upload your factory file, then email it to us with a list of your current modifications.
• 3. Get your file back the same day. We email your custom calibration back the day we receive your stock read — and we'll make sure you're happy with it.

In the Southern California area? Get in touch and we can tune your car in person instead.

Before you order:

• Power figures are estimates, not guarantees. Results vary with fuel quality, altitude, ambient temperature, mechanical condition, supporting modifications and dyno methodology.
• Mechanical condition — tuning raises cylinder pressure and driveline load. The car must be sound first. Pre-existing faults revealed or accelerated by tuning are not our responsibility.
• Accurate information required — we build the file from what you tell us. An unmodified stock read and an honest description of the car, its modifications and its condition are required.
• Warranty — an ECU modification will likely void any remaining factory powertrain warranty.
• Legal use — certain calibrations are for off-road and competition use only. Compliance with federal, state and local emissions law is the buyer's responsibility.
• Risk and liability — the customer assumes the risk of modification. Our liability is limited to the price of the tuning service.

Note: Tuning services are non-refundable once the file has been delivered. The service is complete at delivery. Full terms are on our Terms of Service page.

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