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. (Plain-language statements of standard commercial terms; counsel reviews them when convenient.)

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.
• License, not sale: the calibration file and its contents are our work, licensed to you for use on the one VIN it was built for. Don't reverse-engineer, decompile, redistribute, or resell it — and don't strip any identifying marks from it. The license ends if its terms are broken.

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.

Motorsport is assumed risk. A tuned engine makes more power than the factory calibrated for, and motorsport — track days, closed-course driving, racing — carries risks you accept as yours when you use our products that way. We are not a warranty for your engine, your driveline, or your warranty coverage: no specific power figure is guaranteed on any specific car, and a factory or third-party warranty that objects to modified software is between you and them. If a fine or penalty arises from where or how YOU used what we sold — an emissions inspection, a noise citation, a racing sanction — that is yours as well, to the extent the law allows; you indemnify us against such claims arising from your use.

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].