ECU Tuning: Questions to Confirm Before a Purchase
Confirm the exact vehicle, existing calibration, installed parts and support requirements before choosing engine-control hardware or a tune.
Start with the exact machine
A stage name or horsepower label does not identify the correct engine-control product. Confirm the vehicle, existing module and calibration, fuel requirement, installed parts and intended use with a qualified provider.
Buying a physical GT40 ECU or ECM
Confirm the existing module, connector and part number before purchase. Physical GT40 ECU/ECM modules are exchange only and are not returnable. Check the current module page for availability and contact support before using a replacement as part of a diagnosis.
GT40 ECM status and exact-match help
Send the details that determine fitment
Include the exact year, make, model, engine, current modifications and the SKU or part number you are considering. Photos of the existing part and installation help GT40 check the application.
Email GT40 support · Fitment and support · Shop current products