PCV QUESTION UPR SINGLE VALVE CATCH CAN

[Dntalman]

Before I talk about this, I would like to say the UPR single valve oil Seperator works great. The only complaint was that it did not come with instructions. It seemed easy enough and it was.. The problem I ran into was after the install. I had a extra vacuum line. The kit came with a vacuum plug, so I figured it was for that.. About two days into driving it my car started having problems. It would spark knock once at start up and would spit and sputter when you would ease into the throttle.... If you drove normal it would drive fine.. It only did it when you gave it around half throttle..

To make a long story short.. I traced my steps to when it started and it led me to my last mod, it was my UPR seperator.. I looked it over and everything looked right.. The only thing was a plugged off vacuum line.. I bought a split tee and hooked it in and the car runs fine.. Can someone tell me what that vacuum hose goes to.. Is it a PCV valve? In the picture below you can see it going to the back of the motor from my JLT OIL SEPERATOR.. It is the middle of the line.

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[Dntalman]

I think it runs to the boost bypass valve.

 

[UPRSteve]

The line is for emission reasons and it has no vacuum on it. We have this set up on many TVS set-ups. On the 11-14 we cap it off at the source. Being you had a issue makes me think something else with that line was leaking. With that, I can see a stutter. But you should not be pulling timing at start up either. I have honestly never heard that. If you want, you can send me pictures of what you did to our system at [email protected]

Thanks. Looking forward to talking with you.

 

[Dntalman]

When you say emissions line, what does it hook to?

 

[IvanK]

Interested in the info myself. Considering purchasing one.

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