AC - 427 - 12.0 432hp Stage 1 tuning

The Mack Econodyne AC - 427 - 12.0 432hp produces 432 hp and 2115 Nm as standard. The YASTUNING Stage 1 remap file takes it to 490 hp and 2360 Nm, a gain of +58 hp and +245 Nm. The file is checksum-corrected and reviewed by an experienced calibrator within factory component tolerances.