If you ARE using the idle air control valve (IACV) you will NOT be using the supplied 1/8th NPT plugs. If you have threaded them in, remove them otherwise the IACV will not function.

Place the OE IACV gasket into the machined groove on the bottom side of the throttle body. Next, place the IACV on the gasket aligning the two mounting holes.

Use the two supplied bolts and secure the IACV to the housing.

If you need to rotate the IACV so that the connector faces inward, do that now. (Factory configuration shown)

Do NOT connect the coolant line to the IACV if you have rotated it 180*.