John Deere Tractor 4R Tuning
4 supported John Deere Tractor 4R applications, 2014+.
John Deere
4 supported Tractor 4R tunes
Select Engine
All Supported John Deere Tractor 4R Tunes
| Engine | Years | Version | Stock power | Controller | Platform |
|---|---|---|---|---|---|
| 4044R 2.1l | 2014+ | 43 hp | ECU Bosch EDC17CV54 | AutoTuner | |
| 4049R 2.2l | 2014+ | 48 hp | ECU Bosch EDC17CV54 | AutoTuner | |
| 4052R 2.1l | 2014+ | 51 hp | ECU Bosch EDC17CV54 | AutoTuner | |
| 4066R 2.1l | 2014+ | 66 hp | ECU Bosch EDC17CV54 | AutoTuner |
Other John Deere Models
About John Deere Tractor 4R tuning
Rapid Racing supports 4 John Deere Tractor 4R applications from 2014+ through AutoTuner, with stock outputs up to 66 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: 4044R 2.1l, 4049R 2.2l, 4052R 2.1l, 4066R 2.1l.
Supported controllers: Bosch EDC17CV54.
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.