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06-15-2008, 05:55 PM | #1 |
Scooby Newbie
Member#: 172649
Join Date: Feb 2008
Chapter/Region:
South East
Location: Raleigh NC
Vehicle:2005 GT30R'd STI Obsidian Black Pearl |
VTA BOV Question and Catch Can Question...Kinda Urgent
Not the typical questions really. I have searched and searched and searched with no real definitive answers. So here goes.
We got 95% of everything done on my rotated setup and it was late last night when we hooked up the Forge BOV. I was thinking about how to recirc it because thats how it should be done and I couldn't figure it out. I then this morning after a good nights sleep realized my UR Turbo Kit's intake doesn't have a port to recirv the BOV. So I then think back to my conversation with TopSpeed (don't get me started) a month ago about the Perrin Boost Through tube that puts the BOV before the MAF on the intake side of the intercooler and allows you to run it VTA with no adverse problems. I had asked them if I needed that and he said no. I realized today that now I do with a tune appointment two days from now. As far as my question I just wanna know if my thinking is correct or not. Item #2. I have read probably 100 catch can threads if not more trying to find out the best way to do things. I haven't found a good how to thread on it yet although I think I have an idea of how it goes using two catch cans. The other problem I have is the UR turbo kit just says to vent all the lines to atmosphere. From what I read thats NOT the way to go. If it is okay that would be the easiest way to do it. I do have two Perrin catch cans so I am prepared either way. So my question here is do I use the catch cans and if I do does anyone know a detailed thread on the proper way to do a two catch can setup one for valve cover vents and one for PCV valve.
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06-16-2008, 10:14 AM | #2 |
Scooby Specialist
Member#: 179806
Join Date: May 2008
Chapter/Region:
SCIC
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#1 Yes, you can run it that way, and more power to you if that is the route that runs best.
#2 The purpose of doing this into atmosphere is to reduce blow-by from both ends, the valve cover outlet and the PCV outlet. The downside is that depending on how much boost you are running, actually even on NA, you are no longer recirculating that air so the car will run a bit richer. Also you will be getting oil splatter on the other side of that hose wherever you run it. I ran a drag Supra atmospheric (Semi actually, ran it into the exhaust pipe) because a bit rich was ok and safe rather than the blow by problems I was experiencing at 35psi with a T88. Forgot to mention I ran only 1 catch can with a quart capacity and 2 inlets per IDRA class rules back then. |
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