Getting the best from a Mafless tune, particularly on an automatic transmission equipped car is a painstaking and testing job at the very best of times. Particularly when the vehicle in question had been fitted with aftermarket exhaust componentry that was best described as 'far from optimum for best power'...something we see an awful lot of. Still, you cant sneeze at 15% as an overall gain going Mafless. A decent exhaust and it would see 240rwkw....