Chip Tuning Porsche 911 991 (since 2011)
4 engines · +28 to +42 hp
911 991: 4 engines — 4 petrol. Gains range from +28 to +42 hp, with up to +47 Nm of torque. GAN GA+ from 219 EUR.
All 911 991 engines: exact gains
STOCK output, output with GAN, gain and price for each module.
| Engine | STOCK → with GAN | Gain | Tuning modules and prices | |
|---|---|---|---|---|
| Petrol · 4 engines | ||||
| 3.4i Carrera350 hp / 390 Nm | +42 hp+47 Nm |
GA — 219 EUR · 392 hp GA+ — 219 EUR · 392 hp |
Select → | |
| 3.8i Carrera GTS430 hp / 440 Nm | +34 hp+35 Nm |
GA — 219 EUR · 464 hp GA+ — 219 EUR · 464 hp |
Select → | |
| 3.8i Carrera S400 hp / 440 Nm | +32 hp+35 Nm |
GA — 219 EUR · 432 hp GA+ — 219 EUR · 432 hp |
Select → | |
| 3.4i350 hp / 390 Nm | +28 hp+31 Nm |
GA — 219 EUR · 378 hp GA+ — 219 EUR · 378 hp |
Select → | |
Each engine has its own tuning module: GAN GT / GTL or GAN GA / GA+. Prices are per tuning module and include the current discount.
Not sure which engine you have?
Find your engine by the power output in your registration document: each version has its own module calibration.
Porsche 911 991 tuning: what changes
More power and torque without an ECU remap or replacing any parts. The tuning module only adjusts the engine sensor signals. Your manufacturer’s warranty is preserved: the ECU software is never changed, and the module can be removed at any time.
- Bluetoothsmartphone mode control
- 18 mappingsfine tuning for your engine

- 15 minutesfitted to the factory connectors
- IP67water and dust protection
- +42 hpbest in this generation
3.4i Carrera 350 hp → 392 hp. The other engines gain from +28 hp; see the table for each one.
- up to +30%more power
GAN GT: up to 30%, GAN GTL: up to 25%, GAN GA+: up to 12%.
- GAN APPpower control via smartphone
SPORT, DYNAMIC, ECO and STOCK modes in the GAN app.
- 50 daystest drive
Enhanced performance or your money back, excluding delivery costs.
What Porsche 911 owners say about GAN
EASY AND QUICK INSTALLATION MOBILE APP SIMPLE TO USE FAST CHANGING MODES BETTER THROTTLE RESPONSE REALLY WORKS ! CAR BECAME FASTER Car is more powerful, pleasant to drive ! Don't hesitate you won't be disappointed !
Simple and convenient. Satisfied with result. I connected this device via the attached cable and hid it behind the pile floor covering. Up to 100 km, I notices the result: the throttle response at 1,2,3 gear is better, the fuel consumption did not change (I use the “Dynamic” mode). I think the result is good for such…
Porsche 911 991 chip tuning: questions
Which tuning module do I need for the 911 991?
All engines in this generation are naturally aspirated, so you need the GAN GA or GAN GA+. Find your engine in the table above: each row shows the module and the price.
Is a tuning module the same as a Stage 1 tune?
Not quite. Stage 1 usually means an ECU remap without replacing any parts. The tuning module also works without replacing parts, but it does not change the ECU software: it adjusts the sensor signals, comes off in about a minute, and the OFF button in the app restores the factory settings.