Here in Greece a tuning house created a kit including new control unit, exhaust, air intake and a few more minor modifications.
The outcome was 430 BHPs and 50 Kgm torque.
Result? 0-100 in 4.6sec 300 Vmax but the real gain was at the intermediate accelerations. The car was over 1 sec faster at all reckonings comparing to a Corvette C06 auto!!!
BUT......... the CC clutch from 12% wear went to 90% after 20min
after that 0-100 became 6.0sec
So M! very well said
