[littleblueGT]

The 03 GT doesn't have an EGR valve. If you are still using stock plug wires get rid of them. I'm using Bosch Premium plug wires with a life time warranty. I don't like champion plugs as they leak, and went to NGK 2315.Tie wrap all vacuum lines, especially down by the turbo and brake boost. One reason I went with the plastic intake manifold is the o-rings instead of the gaskets used on the aluminum manifold, and less heat sink.