Induction is one of the most important to intake engine. When VTEC engages, a huge amount of air to the engine. J's Racing developed big bore throttle body which outer diameter is 70mm and inner diameter is 64mm or 66mm. Dyno tested 7-10hp gain to F20C engine. 66mm throttle body will require port matching to the intake manifold. STD ECU compatible.
*This requires to send in your throttle body for exchange.