Chips ( what do they do, how much will it help and the best brand)

[SlowStang2]

They aren't all cats. They are 2 resonators, 2 cats, 2 mufflers. I dont know a single person who has kept their resonators.

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94' Stang GT Convertible --Cobra upper&lower, Mac cold air w/K&N, BBK equal length shorties, BBK offroad H-pipe, American Thunder cat-back, BBK T/B 65mm, 24lb injectors, Pro-77mm MAM, pulleys, aluminum driveshaft, 3.55s, Steeda Tri-Ax shifter, adjustable fuel regulator 14.4@100 MPH on G-tech;96 at track. (Sad, i know. i have stock heads)