Does anyone know what this vacuum line does?
Drifting
Joined: May 2000
Posts: 1,760
Likes: 115
From: Tennessee
I wouldn’t think that vacuum hose would blow off from boost pressure alone, did the car happen to backfire under acceleration? It would only take one backfire or pop back through the blower to blow that hose off.
Thread Starter
Pro
Joined: Apr 2018
Posts: 732
Likes: 90
From: Eastern Pa
No backfire, someone was recently working on the car and I'm guessing they forgot to plug it back in. I was just wondering what would happen differently while it was unplugged? The car did not throw any codes or check engine light, in fact it appeared to drive & run perfectly normal, well except for the fact that my catch can was catching a lot of oil during track use
Drifting
Joined: May 2000
Posts: 1,760
Likes: 115
From: Tennessee
No backfire, someone was recently working on the car and I'm guessing they forgot to plug it back in. I was just wondering what would happen differently while it was unplugged? The car did not throw any codes or check engine light, in fact it appeared to drive & run perfectly normal, well except for the fact that my catch can was catching a lot of oil during track use
Because when vacuum is applied it overcomes the spring tension of the bypass actuator and opens the valve (no boost) when the vacuum cannot be applied, (vacuum hose off) the spring tension from the bypass valve actuator closes the valve (boost).
