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Old 01-01-2009, 10:43 PM
awsrock's Avatar
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Join Date: May 2008
Location: Tinley Park, IL
Posts: 642
Another ARV thread -om603

Hey guys,

Can someone explain the way the ARV works?
I feel like I have been low on boost lately..I had the ARV port plugged (where the vac line goes)..anyway, just as an experiment today, I took the plug off, so the port is now open, and I noticed a somewhat significant increase in power. I am thinking that maybe the valve is not closing all the way, or it was not able to when it was plugged. Tomorrow I might open it up and try to make sure it is sealed shut.
My question is, does the valve's operation depend solely upon vacuum, or does the boost pressure also open / close it? Can I just leave the fitting open?
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2005 E320 CDI - 246k
1987 300SDL TD05-16g, Herlevi pump, Elbe manifold, 2.47 LSD - 213k
Past: 1987 300D - 264k
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