8370 R - 9.0L - 370hp Stage 1 tuning

The John Deere 8Rserie 8370 R - 9.0L - 370hp produces 370 hp and 1685 Nm as standard. The YASTUNING Stage 1 remap file takes it to 400 hp and 1830 Nm, a gain of +30 hp and +145 Nm. ECU: Phoenix L33. The file is checksum-corrected and reviewed by an experienced calibrator within factory component tolerances.