Quote:
Originally Posted by Frank_Jaeger
Bumping this to add that in my research a lot of evidence (i.e. people using vacuum gauges) suggests the back pressure of the exhaust under boost prevents scavenging. I'm going to be running my catch can line preturbo.
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Frank, what components were plumbed in this test? Was a Venturi utilized? If not, of course they weren't seeing any benefit. Venturi's use exhaust flow/velocity to pull the vacuum. If they did use a venturi, was the slash pointed in the correct direction?
I have not put a gauge on my exhaust line/CC to see an actual number, but I can tell you at idle I have decent vacuum on the system. I'll be glad to swing by and let you listen to the air release when the dip stick is pulled out at idle.