The only REAL loss I have had was against a Supra, but then again I haven't been at the right place/right time with a GT500 but can't wait to try. It would be great to see the face of the driver when this little coupe walks away, albeit slowly, from his/her 500hp+ monster. I definitely need a tune for some extra horses, for my dreams are a bit surpassing my cars limitations ATM, .