2 models · 3 versions · 2008–2020
Subaru remote ECU tunes
Every Subaru model below is supported by HP Tuners, so we can tune it remotely: you read the car with your own interface, a tuner builds your calibration by hand and sends it back within three hours, and you pay only once it is delivered. Stage 1 is $250, Stage 2 $450 and Stage 3 $650.
Supported models
Every Subaru model HP Tuners supports
2 models and 3 listed versions, per HP Tuners' supported-vehicle list (June 2026). Linked models have their own page with the full version table.
| Model | Years | Versions | Interface |
|---|---|---|---|
| Forester | 2008–2012 | Forester 2.5L Turbo (EJ25 Only) (2008–2012) | MPVI2 or newer |
| WRX / STI | 2008–2020 | 2 versions | MPVI2 or newer |
Check your exact car on HP Tuners' vehicle list before you buy credits.
Tuning data by engine
Typical gains for the Subaru, by engine
- Subaru WRX 2.5T (EJ255)Stock 265 hpStage 1 +20–36 hp
- Subaru WRX STI 2.5T (EJ257)Stock 305 hpStage 1 +10–25 hp
Typical gains from published dyno results; your car will vary with fuel, mods and conditions.
Before you order
What you need to tune a Subaru
- An HP Tuners interface. Any MPVI2, MPVI2+, MPVI3 or MPVI4 works; we recommend the MPVI4 if you are buying new. Our guide covers buying and setting it up.
- HP Tuners credits to license your car the first time you write a tune. The table on each model page lists the credit cost.
- Your stock file and a datalog from VCM Suite, HP Tuners' free software.