STS PVC switch valve question....
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ok i bought this used STS turbo kit with a GT70 turbo.... I was looking reading through the instructions (thanks ZL1Killa) and noticed that the PVC switch valve is setup different on the kit i purchased. the previous owner had it setup on the wastegate and turbo (see picture).
What is the purpose of having it setup here? Will this hurt anything or is it better?
Thanks guys!
![](http://i721.photobucket.com/albums/ww216/one_bad_ls1/IMAG0080.jpg)
http://i721.photobucket.com/albums/w...1/IMAG0080.jpg
What is the purpose of having it setup here? Will this hurt anything or is it better?
Thanks guys!
![](http://i721.photobucket.com/albums/ww216/one_bad_ls1/IMAG0080.jpg)
http://i721.photobucket.com/albums/w...1/IMAG0080.jpg
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STS kits come with 2 of those valves ... one is for the pcv, and the other is the "electronic boost controller". Basically, when the valve is not energized, the top port of the wastegate sees atmospheric pressure and your boost level will be based on your wastegate spring. When you energize the valve, aka "high boost", it sends boost pressure from the compressor exit through the air regulator and over to the top of the wastegate. This boost pressure helps the wastegate spring hold the wastegate shut longer and tigher, thus raising the boost level. So look around and see if you got another one of those valves with the kit that is used for your pcv.
Last edited by Karpellarpy; 06-04-2009 at 10:53 PM. Reason: spelling
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i have a pcv switch valve and pcv pressure switch.... in the intructions both are under the hood why is one of the setup back by the turbo? sorry im a total newb with boost.......
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The "electronic" boost controller is an accessory and is not covered in the basic installation instructions. We put electronic in quotes b/c that is what STS calls it. It is actually an electrically actuated mechanical boost controller. But that doesn't sound nearly as sexy as electronic.
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So the black little (regulator) and the electronic pcv valve just help make more boost PSI by applying pressure with the spring to help hold the wastegate shut?
So the wastegate has a 8.7psi spring in it... is it possible for me to make only 5 psi boost? Or do i have to buy a different spring?
So the wastegate has a 8.7psi spring in it... is it possible for me to make only 5 psi boost? Or do i have to buy a different spring?
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![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
So the black little (regulator) and the electronic pcv valve just help make more boost PSI by applying pressure with the spring to help hold the wastegate shut?
So the wastegate has a 8.7psi spring in it... is it possible for me to make only 5 psi boost? Or do i have to buy a different spring?
2, boost, controller, drop, electronic, installation, instructions, issue, pcv, pvc, sts, switch, switching, swith, valve, valves