Considering an ECU remap for your Subaru Legacy 2.5 170hp? A Stage 1 remap can take this 2008 - 2014 petrol engine from 170 BHP to 200 BHP and from 230 Nm to 290 Nm of torque (naturally aspirated). This engine scores 5.5/10 for remap suitability. Get a free personalised quote from a trusted remap professional and find out exactly what your Subaru Legacy can achieve.
The Subaru Legacy 2.5 170hp is a 2.5L naturally aspirated petrol engine producing 170 BHP and 230 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 200 BHP and 290 Nm — a gain of around 30 BHP (18%) and 60 Nm (26%).
This engine has moderate remap suitability, with gains weighted towards torque — you will notice the difference most strongly in mid-range pulling power and in-gear acceleration. The tuning headroom is classified as high, based on the percentage gain available from the factory output.
Considerations: Naturally aspirated engine: gains are usually limited; results vary widely.. Unusually high gain for NA engine: treat as an estimate and verify against the exact engine variant.. Large torque increase: drivetrain condition (clutch/gearbox) becomes more important at this level.
All figures shown are typical estimates based on aggregated Stage 1 data for this engine variant. Actual results depend on vehicle condition, mileage, and the chosen tuning method. We recommend discussing your specific vehicle with a qualified remap professional.
| Engine | BHP | Gain | Torque | Gain | Score |
|---|
| 2.0 D Boxer 150hp | 150 → 180 | +30 | 350 → 400 | +50 | Good (7/10) |
| 2.0i 150hp | 150 → 165 | +15 | 196 → 218 | +22 | Moderate (4.5/10) |
| 2.5T GT 265hp | 265 → 275 | +10 | 350 → 370 | +20 | Moderate (5/10) |
Get a personalised remap quote for your Subaru Legacy. We'll connect you with a trusted professional in your area.
All figures shown are typical estimates based on aggregated Stage 1 data for this engine variant. Actual results depend on vehicle condition, mileage, and the chosen tuning method.
We recommend discussing your specific vehicle with a qualified remap professional before proceeding.
