So did some VBOX testing tonight. Unfortunately I didn't enable the 'write' mode so I need to go out again tomorrow. All tests were 60-130 MPH
Anyways, best was 6.4 (fluke) and most were 6.6-6.8. Worst was 6.9. I think the 6.4 was a > 3% negative slope so should discount that.
Also ignore the 0-60 and 0-100... I was only flooring it from like 50 to 131 MPH
This damn car is heavy!