ET sounds about right, but mph sounds a tad high. Is there a track nearby? As I'm sure you know, this is the best place to get your results. Personnaly, I wouldn't get the G-tech - not because it isn't accurate at what it does, but because it's measuring parameters are setup slightly different than what you would see at your local track. This is one of the primary reasons that the G-tech has notoriously provided higher mph readings than the track (which averages your speed at the very end of the track).
The G-tech is a great tuning tool, but in order to compare apples to apples, track time slips the way to go.
Take care,
E
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1991 5.0 LX Coupe - 38,000 miles
13.17 @ 106.14 mph w/ 2.138 60'
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