The throttle body on your SVT Lightning pickup is the part of the air intake system that controls the amount of airflow entering the engine and is connected to the accelerator pedal. All of the air consumed by your truck must first pass through the throttle body, therefore the only logical step to making big horsepower is to make it bigger, right? To increase your 1999-2004 Lightning's horsepower, check out these high-performance throttle bodies from Accufab and BBK!