Chiptuning Subaru Impreza WRX III (2007–2014)
4 engines · +27 to +76 hp
Subaru Impreza WRX III: 4 engines — 4 petrol. The gain is +27 to +76 hp, with up to +106 Nm more torque. GAN GTL from 249 EUR, GAN GT from 399 EUR. GAN GA+ from 199 EUR.
All Subaru Impreza WRX III engines: exact gains
Standard output, output with GAN, the gain and the price for each box.
| Engine | STOCK → with GAN | Gain | Tuning boxes and prices | |
|---|---|---|---|---|
| Petrol · 4 engines | ||||
| 2.5 STi300 hp / 407 Nm | +76 hp+106 Nm |
GTL — 279 EUR · 365 hp GT — 459 EUR · 376 hp |
Select → | |
| 2.5 STi265 hp / 345 Nm | +70 hp+106 Nm |
GTL — 249 EUR · 325 hp GT — 399 EUR · 335 hp |
Select → | |
| 2.5 STi230 hp / 320 Nm | +39 hp+54 Nm |
GTL — 249 EUR · 262 hp GT — 399 EUR · 269 hp |
Select → | |
| 2.5T224 hp / 306 Nm | +27 hp+37 Nm |
GA — 199 EUR · 251 hp GA+ — 199 EUR · 251 hp |
Select → | |
Each engine has its own tuning box: GAN GT / GTL or GAN GA / GA+. Prices are per box and include the current discount.
Not sure which engine you have?
The badge alone is not enough: in this generation, the same engine designation came in different power outputs, each with its own calibration. Check the power output in your registration document and find the matching row.
Same badge, different factory power outputs in this generation:
Subaru Impreza WRX III remap: what changes
The GAN box plugs in between the sensors and the engine control unit (ECU) and adjusts their signals, while a flash remap rewrites the ECU itself. Your manufacturer’s warranty is preserved: the ECU software is never changed, and the box can be removed at any time.
- Bluetoothchange modes from your phone
- 18 mapsfine-tuning for your engine

- 15 minutesfitted to the factory connectors
- IP67water and dust protection
- +76 hpbest in this generation
2.5 STi 300 hp → 376 hp. The other engines gain at least +27 hp; check the table for each one.
- up to +12%with the GAN GA+
GAN GA and GAN GA+ tuning boxes: check the table for each engine’s figure.
- GAN APPpower control via smartphone
SPORT, DYNAMIC, ECO and STOCK modes in the GAN app.
- 50 daystest drive
Feel the difference or get your money back, excluding delivery costs.
Subaru Impreza WRX III remap: common questions
Which tuning box do I need for the Subaru Impreza WRX III?
Find your engine in the table above – each row shows the box and its price.
Is a tuning module the same as a Stage 1 remap?
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.