You are correct on the converter, its a 5500 stall. I was thinking the tires might have something to do with it as well. Everyone said the car was shaking really bad on they dyno, but you go down track and it feels like a Cadillac at 145. As far as my graph, it looked like a 3 year old had a box of crayons and tried to draw a pretty picture. I've never had a dyno graph look like that with loops and everything.