I found out last year when I went to the track in Oct that I dont floor my car on the street and hold it down. When I hit the track with my new eng the car had drove fine and I would hit it a little once in a while but I just dont rip it to the floor and hold it there. At the track when I nailed it and started to run out first it started busting up and surging. I had not rejeted the carb and was to lean but I never knew it was that bad from driving on the street. I dont street race and as Mr Yuck said there is not many places around where I live to run it out hard and not worry about getting a ticket or having them impound the car. Its just not many places around here I feel safe winding it out and not worring about getting a ticket. Ron