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whats the diff in headers?
what areas are hp/torque gained by a 4-2-1 or a 4-1??
also, what are some mods that can be done to a car with automatic, to increase performance? if it matters i have a 91 accord. all i have is a muffler, race cat and a shortram intake. i have a cai sitting in the garage but im too damn lazy to drill and take the bumper off.
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