Went to a dyno with a car I installed the S280 about 2 weeks ago. I was really impressed with the numbers on Meth. (i'll try to post a graph in a while)
Pump Gas 93oct 279whp and 298wtq (he kinda floored it after 3500rpms hence the low tq)
Meth: 326whp 338wtq ( he did floor it bellow 3000 this time)
It was around 90 degrees ambient and pretty high humidity.
The car has basic bolt-ons with 3" exhaust (straight pipe), MAP intake and Whoosh V1 IC, Meth and the S280 w/ Turbosmart WG and DV+ atmospheric. Still on stock MAP sensor peeking at around 28psi and dropping down.