Terms of Sale & Use

These terms cover the Rapid Racing store, the tunes we build, the parts we ship, and the account you tune from. They're written to be read — if any part of this is unclear, that's our bug; write us.

What you're buying

• Tunes: you are buying a license to one calibration, built for one VIN, for use on your own vehicle. The calibration is our work; the license is yours. It is not transferable — a map locked to your VIN has no life on another car anyway.
• Parts: you own the hardware outright once it's paid for and delivered.
• Included with every tune: revisions from your datalogs, for as long as the tune is your active map on that vehicle.

Flashing is yours — and so is the car

You flash your own ECU, with your own tools, on your own time. Modifying an engine control unit is a real modification to a real machine: follow the provided procedure, use a charged battery charger on a healthy battery, and never flash mid-datalog or mid-drive. If a flash goes wrong because the procedure wasn't followed, that's not something a refund undoes — see the returns policy for what we do instead.

Your account

• Keep your login to yourself — your account is where your VIN, your tunes, and your logs live.
• You're responsible for the accuracy of the vehicle info you give us. A tune built for the wrong fuel or the wrong hardware isn't a defect.
• Don't probe, scrape, or attack the service. Do use the wiki, the wiki's content is for reading and learning — commercial reuse of our guides and calibration documentation needs permission.

Liability, honestly

We stand behind our calibrations being what we said they are: built for your VIN, your fuel, your hardware, refined from your logs. We do not promise your specific car will survive any specific abuse — mechanical condition, maintenance, and how you drive it are outside our control and remain yours. To the extent the law allows, our liability for any claim is limited to what you paid us for the product at issue. Nothing in these terms limits liability the law says can't be limited.

Changes and contact

If these terms change, the dated note at the top changes with them. Questions before you buy are the best kind: [email protected].