Thanks for the response. I'm guessing the unit I purchased hasn't ever been updated. Once I get it unlocked I'll get the updates and go from there. Thanks again.

I just purchased a used 7146 and was lookin through the manual and noticed it only mentions the "Diablo" tune and no options for 87/91/93 octane. Are there different model tuners for different mustangs? I have a 99 gt and the tuner is for 98-04 mustangs. Thanks