4.6 V8 275hp Stage 1 tuning

The Buick Lucerne 4.6 V8 275hp produces 275 hp and 400 Nm as standard. The YASTUNING Stage 1 remap file takes it to 290 hp and 430 Nm, a gain of +15 hp and +30 Nm. Engine code LD8. The file is checksum-corrected and reviewed by an experienced calibrator within factory component tolerances.