my friend that tuned my car was used to his blown GTO. he said our cars act similarly, but not exactly the same. he did a great job dialing it in and we never once made reverse progress (if you tune a lot you run into a flash where you actually get worse than it was before until you finally dial it in correctly). that being said, i would never want my car to be tuned on a dyno. it would have acted like **** on the street if my car were tuned on a dyno. i like being able to tune it for real world use.
