New Holland T4 Tuning
3 supported New Holland T4 applications, 2021+.
New Holland
3 supported T4 tunes
Select Engine
All Supported New Holland T4 Tunes
| Engine | Years | Version | Stock power | Controller | Platform |
|---|---|---|---|---|---|
| T4.55 3.4l | 2021+ | 58 hp | ECU Bosch MD1CS069 | AutoTuner | |
| T4.65 3.4l | 2021+ | 74 hp | ECU Bosch MD1CS069 | AutoTuner | |
| T4.65 3.4l | 2021+ | 64 hp | ECU Bosch MD1CS069 | AutoTuner |
Other New Holland Models
About New Holland T4 tuning
Rapid Racing supports 3 New Holland T4 applications from 2021+ through AutoTuner, with stock outputs up to 74 hp. Every calibration is built for your exact engine, fuel, and modifications, then verified on our Dynojet 424xLC2 in Jenison, MI, serving Grand Rapids and West Michigan.
Supported engines: T4.55 3.4l, T4.65 3.4l.
Supported controllers: Bosch MD1CS069.
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.