itb stands for indidual throttle bodies .. instead of a intake manifold which has aintake tube going to a throttle body going to a penulum and then 4 runners going into the 4 intake ports of the head with the itb setup there are four smaller throttle bodies and each intake ports gets its only little throttle body .. and hence the name INDIVIDUAL (one throttle body per intake port) throttle bodies .. hope i helped .. the advantage of the is throttle response and a overall hp gain ..and not to mention it sounds badass there is a video clip in the auto-multi media section with a eg(92-95 civic) with an itb set-up make the cvarsound very beefy and deep ... hope i helped ya out !
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