throttle body spacer?
all's what that is going to do is lengthen the runner of the intake manifold and give you more low end to mid range power.....if any at all..........it has been dyno proven on like old carbarated trucks but i dont know if it would be dyno worthy on a civic
on a inline 6 jeep it works it is one of the best mods you can do for cheap, but on a civic save your money you don't ever see them on 10 sec cars so they probably don't work on civics.
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