My friend wants to do long tube headers on his V8 97 T-bird with 3 inch collectors that go from dual 3 inch pipes into one 3 inch pipe and then back out to dual 3 inch pipes again. He'll be running magnaflow cats and flowmaster super 44 mufflers. His question is will it still be making enough back pressure with that system? The only mods he has right now are 76mm MAF, 75mm throttle body, K&N filter, and 24pd. injectors.
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