Protunes
Engine Calibration

Engine Calibration Guides

Calibration is engine-specific — the limits, the platforms and the work that matters differ from a turbo six to a common-rail diesel. These guides cover the engines workshops search by name: what each one needs from a calibration, what we tune it on, where it catches people out, and the real results behind it. Every file is developed from your vehicle's own stock read and validated against your data, for off-road and competition use.

Diesel & 4WD

Diesel & 4WD Engines

Common-rail diesel calibration is a different discipline — exhaust gas temperature is the limit that matters. See the diesel tuning files service for the full picture.

Don't see your engine?

We calibrate far more than the engines listed here. Register your workshop and submit a stock read — if we tune it, we'll build and validate a custom file from your data.