Quote:

..with a large cam and lo manifold vac at idle, a mopar can will not advance properly and will just dither in and out and give an unstable idle.
..a replacement can that starts advancing at 2 or 3" below the idle vacuum is required.





I would agree with this. As long as your idle vacuum is a few inches above the vacuum needed for full advance, it should work just fine.

The trouble arises when your idle vacuum and can vacuum are the same (or close), then you get feedback loops that lead to a roaming idle.

edit: as long as your idle vacuum in drive is higher than the can vacuum, it should work just fine.

Last edited by hooziewhatsit; 03/18/12 12:18 AM.

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