My 2003 F150 What would a throttle body spacer do for it?
I have a 2003 f150 5.4L with 3 1/2 Exhaust and K&N Cold air Intake. My question is: With the K&N Cold Air Intake does it already have a Throttle body spacer? I know what a Spacer looks like but not was it does or what to look for if it's already on the engine. (Just don't know what it looks like ON an engine.
What do Throttle Body Spacers do for the intake? Anything special?