So I had my car dynotuned a few weeks ago. Car makes pretty good power 584rwhp/500rwt. That's through the auto and stock manifolds..cats are deleted. However, the drivability isn't great yet. The throttle body is doing some crazy stuff and at certain speeds the car will buck/surge due to what we believe is the TB opening/closing when it shouldn't be. WOT this doesn't happen. Seems to be more part throttle acceleration and when I'm shifting the car manually. The tuner spent considerable time on it and got the car better than it was but it's still not right. They are going to see what they can find out over the off season and go at it again in the Spring. Anybody else having issues like this? Any thoughts? I'm wondering if the TB went bad somehow??? I didn't take it apart when I had it off though. Car doesn't throw any codes and other than this seems okay.