Subaru STI Tuning
1 supported Subaru STI application, 2008-2020.
Subaru
1 supported STI tunes
All Supported Subaru STI Tunes
| Engine | Years | Version | Stock power | Controller | Platform |
|---|---|---|---|---|---|
| All engines | 2008-2020 | ECU | HP Tuners |
Other Subaru Models
About Subaru STI tuning
Rapid Racing supports 1 Subaru STI application from 2008-2020 through HP Tuners. Every calibration is built for your exact engine, fuel, and modifications, then verified on our Dynojet 424xLC2 in Jenison, MI, serving Grand Rapids and West Michigan.
Don't See Your Vehicle?
These lists cover off-the-shelf tuning platforms. We also do standalone ECU installs and custom calibrations, so reach out and we'll tell you what's possible for your build. Compatibility data last updated 2026-09-24.