I thought my hypertech made a difference when I got it and the numbers at the track said other wise. It did remove my rev limiter so I paid 160 bucks for my GM chip for that. Like I said I went to fastchip and the times seemed better, but Ed Wright makes those chips and he builds bad *****$ gm 350's. He also asked my cam lift/duration and so on so it was more specific to my ride.
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