315 8.7 Tier 4A Stage 1 tuning

The Case ih Magnum 315 8.7 Tier 4A produces 311 hp and 1531 Nm as standard. The YASTUNING Stage 1 remap file takes it to 390 hp and 1920 Nm, a gain of +79 hp and +389 Nm. The file is checksum-corrected and reviewed by an experienced calibrator within factory component tolerances.