Forthing Tuning
Every Forthing model, engine, and controller we can tune, 2018+.
Forthing
2 supported vehicles via AutoTuner
Select Your Forthing Model
Forthing Engines We Tune
Forthing ECUs and TCUs
Forthing tuning at Rapid Racing
We support 2 Forthing vehicles across 2 models, covering model years 2018+, through AutoTuner. That includes gasoline powertrains and 2 engine and transmission controllers.
Each Forthing tune is calibrated for your exact hardware and fuel, then verified with real data on our Dynojet 424xLC2 in Jenison, MI, serving Grand Rapids and West Michigan. Not sure which controller you have? Browse all supported ECUs or ask us.
Don't See Your Vehicle?
These lists cover off-the-shelf tuning platforms. We also do standalone ECU installs and custom calibrations, so reach out and we'll tell you what's possible for your build. Compatibility data last updated 2026-09-24.