S 3.4i 315hp Stage 1 tuning

The Porsche Boxster S 3.4i 315hp produces 315 hp and 360 Nm as standard. The YASTUNING Stage 1 remap file takes it to 335 hp and 385 Nm, a gain of +20 hp and +25 Nm. Engine code MA1.23. ECU: Siemens/Continental SDI9. The file is checksum-corrected and reviewed by an experienced calibrator within factory component tolerances.