As we all know that Throttle Body plays a very important part in how your fuel-injected engine runs, and makes the car move. The air intake system relies on the throttle body as a pivotal component. The air intake system is what is responsible for controlling the air flow that passes into your engine. For this reason the engine speed is in fact determined by the throttle body. Hex Auto Parts carry a vast of throttle body from the top names, including Foreverun, and many more.