[onfireX5]

RaceChip sells both platforms and would not skew the results. Stock 100-200 Turbo was slightly quicker as I have seen personally. 0.1 to 0.15. Both tuned, the M5 is slightly quicker. For me, the delta is a wash stock or tuned. Extremely close. Almost bought a Turbo S over the M5 but saw what my buddies Turbo S was running. I really like the Turbo S. The M5 is more comfortable but if the Turbo S was as fast as the GT2RS, I would trade the M5 for it today. They are too close in acceleration to compromise the comfort. M5 is an overachiever !