Contour Enthusiasts Group Archives Forums Modifications Duratec Performance Intake manifold, modification and what we can do.

I modded my upper intake EGR passages to be more like the SVT and also added some flow improvements. The SVT has 2 EGR ports behind the TB, where the stock intake has 3, so I epoxy-filled the center port. I also smoothed the intake passage by carefully removing the 3 aluminum humps just behind each EGR port. A noticable improvement in the upper RPMs. Increasing the TB flow has made an even bigger improvement.