Porsche 911 GT3 RS (991.1) ECU tune

Fits 2015–2016 · Stage 1 and Stage 2 · Mail-in

$3,499

Front three-quarter view of a black Porsche 911 GT3 RS (991.1) on a harbor waterfront at sunset

Stage 1

Figures available on request

Stage

Tuned figures are estimates; results vary.

Add-ons
  • You ship: your ECU, with your printed order confirmation
  • Turnaround: two business days from when your ECU arrives
  • Return shipping: paid by us

The car

About the Porsche 911 GT3 RS (991.1)

Shown at the Geneva Motor Show in March 2015, the 991.1 GT3 RS was the first GT3 RS to combine a PDK gearbox with the wide body of the 911 Turbo. Its rear-wheel-drive chassis uses rear-axle steering and Porsche Torque Vectoring Plus with a fully variable rear differential lock, and both tracks are wider than the GT3’s.

The 4.0-liter naturally aspirated flat-six came from the previous-generation GT3 RS 4.0 and revs to 8,800 rpm, and the seven-speed PDK is shifted with paddles on the steering wheel. Porsche quotes 0–60 mph in 3.1 seconds and a 193 mph top speed.

Weight saving shows in the materials. The roof is magnesium, with an 11.8-inch-wide recess that runs over it and continues into the front lid, and both the front and engine lids are carbon fiber. Louvered vents over the front wheels are another mark of this RS.

The gearbox has its own controller and torque limits, so the optional TCU tune raises them to match, with sharper shifts and stronger clutch clamping.

More about Porsche tuning

Figures & prices

Porsche 911 GT3 RS (991.1) tune figures by year

Factory and tuned horsepower and torque from our catalog, with prices for each stage and add-on.

Model yearFactoryStage 1Stage 2Add-ons
2015–2016——
$3,499
—
$3,499
TCU tune $1,999
Map switching $3,999

Tuned figures are estimates, not guarantees. Actual results vary with the car’s condition and modifications, fuel quality and octane, temperature, altitude and the dyno used. See our Terms of Service.

How it works

Mail-in tuning, start to finish

  1. 01

    Order online

    Choose your year, stage and add-ons and check out securely.

  2. 02

    Ship your ECU

    Pack it with your printed order confirmation email and send it to our Phoenix shop.

  3. 03

    We calibrate it

    Within two business days of it arriving.

  4. 04

    We ship it back

    Return shipping is on us. Reinstall and drive.

How mail-in tuning worksECU shipping instructions

FAQ

911 GT3 RS (991.1) tuning questions

More answers in our FAQ

Which years of the 911 GT3 RS (991.1) does this tune fit?

Our online catalog lists Stage 1 and Stage 2 tunes for 2015–2016 Porsche 911 GT3 RS (991.1) models. Choose your year at the top of the page; the figures and prices are the same for every year.

How is the 911 R related to this car?

The 911 R, built in 2016, uses this car’s 4.0-liter engine but pairs it with a six-speed manual, replaces the fixed wing with a retractable rear spoiler and weighs less. It has its own page, 911 R (991.1).

What changed with the 991.2 GT3 RS?

Its replacement, sold in the US as a 2019 model, revs to 9,000 rpm, uses ball joints on all suspension arms, makes twice the downforce of the GT3 of its day and was the first GT3 RS offered with a Weissach Package. It is listed as 911 GT3 RS (991.2).

What is the difference between Stage 1 and Stage 2 on the 911 GT3 RS (991.1)?

Stage 1 is calibrated for the car as it left the factory and runs on pump-grade fuel. Stage 2 pairs the calibration with supporting bolt-on modifications such as downpipes and runs on high-octane fuel.

Do I need a TCU tune for the 911 GT3 RS (991.1)?

A TCU tune is available as an add-on ($1,999). It raises the transmission’s torque limits and sharpens the shifts so the gearbox can handle the extra power. Ship your TCU in the same box as your ECU.

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Contact

Talk to our tuning shop

Customers across the US order online and mail us their ECU. Our shop is at 952 W Melinda Ln, Suite D in north Phoenix (Deer Valley, 85027), and local owners are welcome to bring their car in. Call, visit or send us an inquiry.

HOURS Mon - Fri: 8AM - 5PM
Sat & Sun: Closed

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