HONDA EG EK DC2 CIVIC INTEGRA THROTTLE BODY SPACERThis spacer is bolted on the back of the throttle body, downstream of the main airflow. This is strictly an aftermarket enhancement used to increase the fuel economy, torque and horsepower. It basically directs the flow of air into the manifold to maximize the volume that goes into the intake. This is a quick and inexpensive way to get better performance from an engine. How it Helps The throttle body regulates the air flow that goes into the engine.