4.2i 335hp Stage 1 tuning

The Audi A8 4.2i 335hp produces 335 hp and 430 Nm as standard. The YASTUNING Stage 1 remap file takes it to 355 hp and 450 Nm, a gain of +20 hp and +20 Nm. Engine code BFM. ECU: Bosch ME7.1.1. The file is checksum-corrected and reviewed by an experienced calibrator within factory component tolerances.