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The g-tech comment was an inside joke between me and 02GT. I wasn't serious
would I by any chance have anything to do with that?
As far as accuracy, it's all about setup.
0-60 times are pretty damn accurate in the newest G-tech. HP calculations are only accurate if you get your weight right on. My gtech and my ecu datalogs (taken at 16 samples a second) match almost dead nuts when it comes to 0-60.
My friend Jason had his car weighed and dyno'd. The GTech was within 5 hp with the proper weight entered. But small changes in weight or excessively jerky driving manuevers can throw it off a lot.