Focus Fanatics - View Single Post - HOW-TO: SVT IMRC DSI Intake Manifold Upgrade FOR ZETEC!!!!
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Old 10-16-2006, 12:47 PM   #107
sc0tty8
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Join Date: Sep 2005
Fan#: 27536
Location: Litchfield MN
What I Drive: 2k3 Pitch Black ZX3

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To fix the hanging revs, I modded my IAC port, what I did was scuffed it with 80 grit sand paper, cleaned the port out with carb cleaner, allowed it to try, then filled it with 2 part epoxy.

Then, I drilled a 5/32" hole in it, and tapered the opening with the drill bit.

The revs and idle was a lot lower.

Another thing to check is make sure the manifold is mating against the intake ports on the head properly.
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