i looked under my car 87 gt all stock seems like theres 4 cats ??? would i also want a exhuast should i take all the cats off and put str8 pipes with flows? or leave cats on and weld flowmasters on them 40s or 44s
i dont have emissions but i was wondering if i should take the cats off if ill lose back pressuer or something like that what would be a good set up flows 40s or 44s with cats or no cats with just pipes and flows 40 44s?
Like mustang5L5 said, I would do a catback with cats. No straight pipes, get a H-pipe or X-pipe, mufflers up to you. I run long tubes, off road H-pipe (no cats) and OLD 3-chamber flowmasters. Mine is a little too loud now that I'm getting older and I'm a home owner with permanent neighbors! If I were still renting, FU*k the neighbors! A guy I worked with bought a GT w/ straight pipes and it was very raspy, almost obnoxious