Performance Chip Tuning Subaru Legacy IV (2003–2009)
12 engines · +17 to +29 hp
Subaru Legacy IV: 12 engines — 12 gas. Gains run from +17 to +29 hp, with up to +36 Nm more torque. GAN GA+ from 189 EUR.
All Subaru Legacy IV engines: exact gains
STOCK output, output with GAN, gain and price for each module.
| Engine | STOCK → with GAN | Gain | Tuners and prices | |
|---|---|---|---|---|
| Gasoline · 12 engines | ||||
| 3.0i245 hp / 297 Nm | +29 hp+36 Nm |
GA — 199 EUR · 274 hp GA+ — 199 EUR · 274 hp |
Select → | |
| 2.0i190 hp / 196 Nm | +23 hp+24 Nm |
GA — 189 EUR · 213 hp GA+ — 189 EUR · 213 hp |
Select → | |
| 2.0i180 hp / 196 Nm | +22 hp+24 Nm |
GA — 189 EUR · 202 hp GA+ — 189 EUR · 202 hp |
Select → | |
| 2.0T260 hp / 325 Nm | +21 hp+26 Nm |
GA — 199 EUR · 281 hp GA+ — 199 EUR · 281 hp |
Select → | |
| 2.5i173 hp / 227 Nm | +21 hp+27 Nm |
GA — 189 EUR · 194 hp GA+ — 189 EUR · 194 hp |
Select → | |
| 2.5i177 hp / 299 Nm | +21 hp+36 Nm |
GA — 189 EUR · 198 hp GA+ — 189 EUR · 198 hp |
Select → | |
| 2.0i164 hp / 190 Nm | +20 hp+23 Nm |
GA — 189 EUR · 184 hp GA+ — 189 EUR · 184 hp |
Select → | |
| 2.5i165 hp / 226 Nm | +20 hp+27 Nm |
GA — 189 EUR · 185 hp GA+ — 189 EUR · 185 hp |
Select → | |
| 2.5i167 hp / 229 Nm | +20 hp+27 Nm |
GA — 189 EUR · 187 hp GA+ — 189 EUR · 187 hp |
Select → | |
| 3.6i256 hp / 247 Nm | +20 hp+20 Nm |
GA — 199 EUR · 276 hp GA+ — 199 EUR · 276 hp |
Select → | |
| 2.0i150 hp / 196 Nm | +18 hp+24 Nm |
GA — 189 EUR · 168 hp GA+ — 189 EUR · 168 hp |
Select → | |
| 2.0i138 hp / 187 Nm | +17 hp+22 Nm |
GA — 189 EUR · 155 hp GA+ — 189 EUR · 155 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 Legacy IV 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
- +29 hpbest in this generation
3.0i 245 hp → 274 hp. The other engines gain +17 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 Legacy IV tuning FAQ
Which tuner do I need for my Subaru Legacy IV?
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.