3.8 Supercharged V6 240hp Stage 1 tuning

The Pontiac Bonneville 3.8 Supercharged V6 240hp produces 240 hp and 380 Nm as standard. The YASTUNING Stage 1 remap file takes it to 260 hp and 400 Nm, a gain of +20 hp and +20 Nm. Engine code L67 Series 2. The file is checksum-corrected and reviewed by an experienced calibrator within factory component tolerances.