S 3.4i 310hp Stage 1 tuning

The Porsche Boxster S 3.4i 310hp produces 310 hp and 360 Nm as standard. The YASTUNING Stage 1 remap file takes it to 337 hp and 380 Nm, a gain of +27 hp and +20 Nm. Engine code MA1.21. ECU: Siemens/Continental SDI3. The file is checksum-corrected and reviewed by an experienced calibrator within factory component tolerances.