tuning
when i will be tuning my 03 gt, i will have long tube headers, h-pipe, high flow cats, 75 mm TB, mac fenderwell intake, upper intake plenum and 3.73 gears. is this enough mods for the chip to make a big difference? or should i wait til more mods come? i have researched diablo so far, but i want to explore all options
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'01 Roush Stage 3
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