3.8 V8 540hp Stage 1 tuning

The McLaren 540C 3.8 V8 540hp produces 540 hp and 540 Nm as standard. The YASTUNING Stage 1 remap file takes it to 620 hp and 680 Nm, a gain of +80 hp and +140 Nm. ECU: Bosch MED17.8.3. The file is checksum-corrected and reviewed by an experienced calibrator within factory component tolerances.