[03Steve]

Originally Posted by Mach1Canuck

This is for anyone that doesn't like when the RPM's that are slow to drop or even rise slightly when you push the clutch in to shift. Another symptom, is that when cruising in a higher gear and you let your foot off the gas, the car almost cruises on its own for a bit.

First, understand the problem. The engine is recieving too much air through the IAC valve. From my knowledge Ford did this for emissions reasons.

This can be adjusted in the tune. There are two sub-categories, one is called "dashpot gain", the other is called "dashpot decay rate". "Dashpot clip" can be worked with as well, but it's not always necessary.

Kudos for the mechanical ingenuity, but I'd like to note that the problem described should be attempted to be fixed electronically first.