Glad you got that sorted out :)
I'm still curious if the axle ratio is set wrong in the tunes or if maybe selecting the transmission type before or after selecting which tune to load might have something to do with it. The ratios are different for GT manual vs. automatic, but V6's have the same for ...

There is a parameter for tire size somewhere in the custom tune section, it's in revolutions per mile, I believe, so you have to find the circumference of the tire in inches and divide the number of inches in a mile (numbers are in the manual).
But you should compare the tire diameter to stock ...

I found a problem with my OEM tune (Western Motorsports) which caused the same thing, might be related. When I loaded the tune my speedo was reading high by about 10%. I reloaded the stock tune and the speedo was correct again.

It turns out that the axle ratio was incorrect in my OEM tune (no idea ...

I'm having a similar problem with datalogging, both streaming to a laptop and trying to load an uploaded log file into the CMR_DAT application.

U7145 - '07 Mustang GT
Western Motorsports 80mm intake tune
Dell Latitude D620 laptop running Win XP Pro SP2
standard serial cable on COM 1

When streaming ...