My co-worker just got a COBB AP/Bren tuning PRO tune for his 2015 Subaru WRX w/manual tranny. His only mods are muffler delete and COBB/Bren Tuning PRO tune. My car is a '13 550i with JB stage 1 tune. He's never dyno'd his car but we ran from a 40- 90mph roll and it was dead even until we neared 100mph and I started to walk off before we let up. He sent his logs to Bren Tuning on that run, he was running 35* of timing and they had to revise his tune down to 29* of timing.