CALIBRATIONS LLC / THE AWD TUNING ARCHIVE
2019 STI.
Built around 93 octane.
Zach’s STI illustrates a turbo package planned around pump fuel and a useful power band.
Talk with Keith ↗Start with the fuel you actually use.
AWD Tuning’s post identifies Zach’s 2019 Subaru STI with a BCP turbo on 93 octane. It describes a strong power band from a relatively simple package, with more work planned for the future.

- Vehicle: 2019 Subaru STI
- Turbo: BCP
- Fuel: 93 octane
- Power and torque: not stated in the source caption
The planning lesson
Tell your tuner what fuel is available where you drive, how you use the car and whether this is the final setup or one stage in a larger build. Those details help frame the conversation before choosing a calibration path.
Questions to bring to Keith
- What turbo and supporting hardware are already installed?
- What fuel is currently in the car, and what will you use normally?
- What ECU or tuning device is fitted, and who created the current calibration?
- What response or drivability changes are you looking for?
- Which upgrades are planned next?
The source does not specify the complete hardware list or a final dyno result. A similar-looking STI should be assessed on its own setup.
Historical AWD Tuning work from Keith’s background, documented before this Calibrations LLC feature. View the original AWD Tuning post.
Explore all six build examples · Prepare for your consultation