[twin turbo]

I'm not quite sure I'm following your point with the above cars. The silver car had the lowest ET because it had the best 60 ft time, which is all about traction at the launch. Are you saying it had the lowest ET because it had 130 lbs more RWTQ but similiar hp?

The few times I've made a passes at a track my ET has varied by up to a full second depending on my 60 ft time, but my mph remained fairly constant.