Individual throttle bodies replace a single central throttle body and intake manifold with separate butterfly valves for each engine cylinder. This setup drastically reduces the distance air must travel to reach the combustion chamber, resulting in razor-sharp throttle response. Tuners favor them for high-revving naturally aspirated engines despite the complex vacuum routing.
Heard on the job
We need to balance the ITBs on that AE86 before it goes on the dyno, because it's idling rough.
Insider tip
Balancing ITBs requires a specialized vacuum gauge setup to ensure every cylinder pulls the exact same amount of air at idle.
Also heard as
- individual throttle bodies