Anyone with a 94-95 stang gt that has done this?

[SlowStang2]

Rumor has it the computer in these models retards timing during shifts. I called summit and asked them questions about mass air meters and this is where they told me they had a kit for the mass air meter, injectors, and a computer. The guy said it was a 93 computer and it runs a better program than the 94-95s. Well, is this just hype? Has anyone gotten an older computer and seen/felt a difference. As everyone feels, no sense spending money on a product that gives little or zero result. Thanks!

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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 14.4@100. (Sad, i know. i have stock heads)