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BOV not going off? BCS?

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1Gina2G

10+ Year Contributor
810
2
May 6, 2011
Beaufort, South Carolina
Hey there everyone, just trying to figure out why my BOV isn't working. With the engine running at idle speed, you should be able to here the BOV after pressing the throttle body correct? everything looks connected except for the small port on the intake for the boost control solenoid, but i can't find anything that would be a boost control solenoid, so with it capped off it still doesnt activate the BOV...anyone know why?
 
Hey there everyone, just trying to figure out why my BOV isn't working. With the engine running at idle speed, you should be able to here the BOV after pressing the throttle body correct? everything looks connected except for the small port on the intake for the boost control solenoid, but i can't find anything that would be a boost control solenoid, so with it capped off it still doesnt activate the BOV...anyone know why?

Well is the BoV recirculated to the intake track? Do you have one of the lines leading from the BoV to the intake manifold? Is the BoV securely in place with the Intercooler piping? Also you cant hear the BoV too well in idle and reving from my experience why not drive it around and see
 
would anybody be able to post a pic of the boost control solenoid? Im trying to ge some pics up here of my own but they're not uploadingfor some reason.
 
so on the boost control solenoid, there's 2 small holes, does one get capped off or does it stay open, i only know that one of them attaches to the intake?
 
the other one attaches to the wastegate if im not mistaking because thats how i hooked up my manual boost controller. one line went to the intake and the other went to the wastegate
 
the other one attaches to the wastegate if im not mistaking because thats how i hooked up my manual boost controller. one line went to the intake and the other went to the wastegate

What if my wastegate is hooked up to my intercooler piping? It looks like thats where it goes, there's a little hose connection on the intercooler piping right below the wastegate. So I should unplug it from the piping and plug it into the BCS?
 
Wow, awesome ignoring of the post with the answer, good luck.

As much as it might not seem like it, I have researched before all my posts, and I looked at your diagrams before my last post. It does not show the wastegate connected to the I/C piping from what I can tell, I was trying to see if there might be a good reason to why it was there. At the same time, I can hardly understand the diagrams..

This is what I was trying to explain, this is clearly a line from the wastegate to the intercooler piping..is this not supposed to be there? :confused: As I mentioned before I had a friend do most of my rebuild, so I'm just trying to make sure.
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As much as it might not seem like it, I have researched before all my posts, and I looked at your diagrams before my last post. It does not show the wastegate connected to the I/C piping from what I can tell, I was trying to see if there might be a good reason to why it was there. At the same time, I can hardly understand the diagrams..

This is what I was trying to explain, this is clearly a line from the wastegate to the intercooler piping..is this not supposed to be there? :confused: As I mentioned before I had a friend do most of my rebuild, so I'm just trying to make sure.
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That line is your pressure source for your BCS/MBC. Stock it is on the j-pipe but on your aftermarket intercooler piping it is on the lower intercooler pipe (LICP). Your BCS is bypassed and you don't have a MBC, setup like that you are running straight wastegate pressure.

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That line is your pressure source for your BCS/MBC. Stock it is on the j-pipe but on your aftermarket intercooler piping it is on the lower intercooler pipe (LICP). Your BCS is bypassed and you don't have a MBC, setup like that you are running straight wastegate pressure.

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So I can just leave that line connected? What do I do about the other connection in the BCS that has nothing going to it?
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So I can just leave that line connected? What do I do about the other connection in the BCS that has nothing going to it?
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If you want to run your BCS, you need to run one vacuum line straight from the open port on the BCS to the nipple on your wastegate. Then run a second line from the nipple on your intercooler pipe (pressure source) and Tee it into your first line (from the BCS to the Wasetgate). This is EXACTLY how it is showed in the diagram posted (except your pressure source is the intercooler pipe not the turbo).
 

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A question that I have not seen asked is this.

When you ask about the BOV going off, are you attempting to rev the motor while it's parked?

Yeah just slightly because everythings brand new, tranny and new longblock. This is my first DSM and first DSM build, with mostly the help of my friend who I haven't been able to see in a while. The car right now isn't driveable because I still need to get the front axle in.

I thought BOV's still go off when the car is in park?
 
Yeah just slightly because everythings brand new, tranny and new longblock. This is my first DSM and first DSM build, with mostly the help of my friend who I haven't been able to see in a while. The car right now isn't driveable because I still need to get the front axle in.

I thought BOV's still go off when the car is in park?

What BOV is it.?
 
I thought BOV's still go off when the car is in park?

The BOV should only open when there is a transition from positive pressure in the intake piping and negative pressure in the manifold. So you have to be making boost for it to open when you close the throttle.

The BOV shouldn't be opening without boost. If it does, the noise you hear is the engine sucking air into the engine potentially bypassing where it counted rather then releasing pressure. They do that then they are adjusted too loose.
 
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