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Old 06-06-2012, 07:55 AM
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Originally Posted by cobalt327
The eye watering exhaust is unburned hydrocarbons, caused by the EGR effect of the cam timing. This is common w/a cam that has a lot of overlap/tight LSA/late closing intake.

If you can, add initial timing. Just be sure to balance the total timing by removing timing from the mechanical advance so the total timing doesn't go too high.

In some cases, dialing in some vacuum advance could help. But having the vacuum at idle that low will make that impractical, though. I'd advise you to use vacuum advance, but in your case use ported vacuum for the vacuum advance. Limit the vacuum advance to 10 degrees.
OK, Thanks for the input! I'll give it a shot.
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