[mustangmiller]

does anyone know how this chip performs? american muscle claims 4 tunes it is worth the $270?

[95gts silver/bl]

I think they sell the chip and you have your local tuner perform the actual tuning.It might be a option to get it with a tune but i would think you would get better performance with dyno tune than a mail order tune.I purchased the quarterhorse tuner but it has a really steep learning curve.check out some of the tuning sites .good luck