Bespoke, not generic
A good remap is calibrated for your specific vehicle, engine, fuel and any modifications fitted — not a generic file downloaded from a database and loaded onto every car of that model regardless of condition or spec. Generic files are cheaper for a reason.
Verified, not estimated
Claimed power figures mean little without proof. A good remap is verified on a dyno, ideally with a genuine before-and-after comparison run on the same day, same conditions — not a number pulled from a spec sheet.
Driveability preserved, not sacrificed
Raw peak numbers are only half the story. A good remap should feel smoother and more responsive to drive, not harsh, jerky or unpredictable. Prioritising driveability and long-term engine health alongside performance is what separates responsible tuning from reckless tuning.
Backed by a genuine warranty
A tuner confident in their own work will stand behind it. A lifetime software warranty, and a backed-up original file so you can always return to factory settings, are strong signs of a tuner who does things properly.
Red flags worth avoiding
Be cautious of remaps that are suspiciously cheap compared to the market, tuners who won’t discuss what’s actually being changed, no health check beforehand, no warranty offered, and no way to verify the claimed gains.
- No pre-remap health check
- Generic file, not matched to your exact vehicle
- No dyno verification or proof of gains
- No warranty on the work
- Vague or evasive answers about what’s actually changing