Performance Chip Tuning Subaru Impreza I (2000)
8 engines · +11 to +20 hp
Subaru Impreza I: 8 engines — 8 gas. Gains run from +11 to +20 hp, with up to +27 Nm more torque. GAN GA+ from 189 EUR.
All Subaru Impreza I engines: exact gains
STOCK output, output with GAN, gain and price for each module.
| Engine | STOCK → with GAN | Gain | Tuners and prices | |
|---|---|---|---|---|
| Gasoline · 8 engines | ||||
| 2.5i167 hp / 225 Nm | +20 hp+27 Nm |
GA — 189 EUR · 187 hp GA+ — 189 EUR · 187 hp |
Select → | |
| 2.2i135 hp / 190 Nm | +16 hp+23 Nm |
GA — 189 EUR · 151 hp GA+ — 189 EUR · 151 hp |
Select → | |
| 2.0i125 hp / 184 Nm | +15 hp+22 Nm |
GA — 189 EUR · 140 hp GA+ — 189 EUR · 140 hp |
Select → | |
| 2.0i115 hp / 170 Nm | +14 hp+20 Nm |
GA — 189 EUR · 129 hp GA+ — 189 EUR · 129 hp |
Select → | |
| 1.5i97 hp / 129 Nm | +12 hp+15 Nm |
GA — 189 EUR · 109 hp GA+ — 189 EUR · 109 hp |
Select → | |
| 1.8i103 hp / 147 Nm | +12 hp+18 Nm |
GA — 189 EUR · 115 hp GA+ — 189 EUR · 115 hp |
Select → | |
| 1.6i90 hp / 128 Nm | +11 hp+15 Nm |
GA — 189 EUR · 101 hp GA+ — 189 EUR · 101 hp |
Select → | |
| 1.6i95 hp / 143 Nm | +11 hp+17 Nm |
GA — 189 EUR · 106 hp GA+ — 189 EUR · 106 hp |
Select → | |
Each engine gets its own performance chip: GAN GT / GTL or GAN GA / GA+. Prices are per performance chip and include the current discount.
Not sure which engine you have?
The badge alone isn’t enough: in this generation, the same engine came with different horsepower ratings, each with its own calibration. Check the horsepower in your owner’s manual or vehicle documents and find the matching row.
Same badge, different factory power outputs in this generation:
Subaru Impreza I tune: what changes
More power and torque with no ECU flash and no new parts – the module only adjusts the engine sensor signals. Your factory warranty is preserved: the ECU software is never changed, and the module can be removed at any time.
- Bluetoothswitch modes from your phone
- 18 mapsto fine-tune your engine

- 15 minutesplug-and-play install
- IP67water and dust protection
- +20 hpbest in this generation
2.5i 167 hp → 187 hp. The other engines gain +11 hp and up; check 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
Switch between SPORT, DYNAMIC, ECO and STOCK in the GAN app.
- 50 daystest drive
Enhanced performance or your money back, excluding shipping costs.
Subaru Impreza I tuning FAQ
Which tuner do I need for my Subaru Impreza I?
Every engine in this generation is naturally aspirated, so you’ll want the GAN GA or GAN GA+. Find your engine in the table above – each row shows the tuner and the price.
Is a tuning module the same as a Stage 1 tune?
Not quite. Stage 1 usually means an ECU flash tune 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.