Pre-tune checklist

Everything that should be true before the first datalog. If any box can’t be checked, fix it first: a tune can’t correct a mechanical problem.

PDF ↓CSV ↓

Mechanical

Compression or leak-down test done, cylinders within spec
No oil, coolant, or fuel leaks
Timing belt or chain condition known; service done if unknown
Cooling system bled, fans working, thermostat correct
Clutch and driveline healthy for the power target

Fuel

Pump, lines, and regulator sized for the power target and fuel type
Fuel pressure gauge or sensor installed and readable
Injector make, size, and characterization data on hand
Fresh fuel of the type you’ll actually run; ethanol content known if flex

Ignition and sensors

Plugs gapped for boost and in good condition
Coils and wiring checked; no misfires at idle
Crank / cam trigger set up and timing verified with a timing light
IAT, CLT, MAP, and TPS reading correctly in the software

Wideband (required)

Wideband sensor installed in the correct position
Controller powered and warmed up before logging
Wideband logged in the ECU, not just shown on a gauge
Free-air calibration done if your controller needs it

Boost and safety

Smoke test passed — no boost or vacuum leaks
Wastegate spring and boost control plumbing confirmed
Fire extinguisher in the car
Testing only on a dyno, track, or closed course

Files

Current map saved and backed up
Firmware and software versions written down
A short idle and drive log ready to send

Ignition House · [email protected] · General guidance only. Follow your ECU manufacturer’s documentation, and get qualified help for anything you’re unsure about.