4.2 V8 405hp Stage 1 tuning

The Maserati GranTurismo 4.2 V8 405hp produces 405 hp and 460 Nm as standard. The YASTUNING Stage 1 remap file takes it to 430 hp and 495 Nm, a gain of +25 hp and +35 Nm. Engine code M 139P. ECU: Bosch ME7.3.2, Bosch ME9.1.1. The file is checksum-corrected and reviewed by an experienced calibrator within factory component tolerances.