Hitachi SH72543 ECU Tuning
Engine control unit used in 5 supported models from 1 make.
Subaru with the Hitachi SH72543
All Subaru tunes- Subaru Ascent2018+2.4TAutoTuner
- Subaru Forester2013+SJ · 2.0 XTAutoTuner
- Subaru Impreza2022+2.4TAutoTuner
- Subaru Levorg2015+2.0TAutoTuner
- Subaru Outback2019+2.4TAutoTuner
About Hitachi SH72543 tuning
The Hitachi SH72543 engine control unit is supported in 5 models from Subaru. We read, modify, and flash it with AutoTuner, then verify the result on our Dynojet 424xLC2 in Jenison, MI. A custom calibration optimizes fueling, ignition timing, boost, and torque limits for your exact build.
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.