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Old 03-17-2026, 04:19 PM   #4
RobZL1
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Drives: 2017 ZL1
Join Date: Aug 2017
Location: ATL
Posts: 1,835
If I'm understanding the description correctly, your other issue is that the engine is pulling in unmetered air (and apparently unfiltered, too) through that catch can when the engine is under vacuum.

One key distinction from this and the MM cans is that the MM cans have a vacuum line attached.

Yes, you can just vent to atmosphere. Some people do that. I don't think it's ideal in the year 2026 (or the year 1996 for that matter), but it can be done and tooned around.
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Mods being installed-
oil pump, cam, ported heads, dual in-tank, Goliath and XDI, corn, etc., etc.
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