Boost Controller

[ETalon95]

SBR MBC

1. I put a "T" in the line running from the BOV to the Intake manifold.
2. Unhooked the hose running from the wastegate solenoid to the wastegate and capped the nipple on the solenoid.
3. Ran a hose from the actual wastegate to the MBC.

The boost controller will not work. I tried to tune it all day and it doesn't hold any boost at all. First, do I have it hooked up right? Second, I have the Slowboy Racing Controller, so does the top nipple go to the wastegate and the side nipple go to the "T" in the BOV line?

 

[romeen]

Don't use your BOV line as a pressure source. If you are still using the T25 then run a line from the nipple on the compressor housing to the mbc. Then run your out line to the WGA. Use a single designated line w/out any tees for your BOV.

 

[97gstnick]

I do not know what that boost controller looks like, but I can tell you that the nipple of the boost controller which has the ball and spring against is the side that receives the pressure source (bov line). The second nipple goes to the wastegate.

Remember that a boost controller is regulating the air pressure that goes to the wastegate. The side of the boost controller that is doing the work (ball n spring) will always need the air source. Keep that in mind and you shouldn't have to ever wonder how a boost controller hooks up. (At least a simple manual one).

 

[97gstnick]

Don't use your BOV line as a pressure source. If you are still using the T25 then run a line from the nipple on the compressor housing to the mbc. .

To the OP, he's right about using the turbo line for the source. Its simpler and takes much less vacuum line. (This is how i have mine setup). But you can use the bov line if thats what you prefer for whatever reason.

 

[ETalon95]

I'm running a 14b set-up, does it have the compressor housing nipple?

 

[ETalon95]

Keep that in mind and you shouldn't have to ever wonder how a boost controller hooks up. (At least a simple manual one).

I didn't wonder until I tried every little adjustment and it still doesn't work. I blew air through the controller, you can only blow air through one way, so I have the nipple that recieves the air coming from the BOV line. I tried both way but neither work.

 

[97gstnick]

I didn't wonder until I tried every little adjustment and it still doesn't work. I blew air through the controller, you can only blow air through one way, so I have the nipple that recieves the air coming from the BOV line. I tried both way but neither work.

Well if you knew how to properly hook up a boost controller than your question shouldn't be "is it hooked up correctly", it should be "whats wrong with this boost controller". Can you take the controller apart?

 

[romeen]

I'm running a 14b set-up, does it have the compressor housing nipple?

No the 14b does not have a fitting on the compressor housing. You will need to drill and tap your j-pipe for a nipple to use as your pressure source. It really isn't hard. This thread should help:

http://www.dsmtuners.com/forums/showthread.php?t=255444

It sounds like you still have a line running from your intake pipe to the boost control solenoid with the other nipple on the bcs capped off. This will work but it may be easier to just remove the line and cap off the nipple directly on the intake pipe. One less vacuum hose to get in your way when you are working around there or need to remove your intake.

 

[ETalon95]

Well if you knew how to properly hook up a boost controller than your question shouldn't be "is it hooked up correctly", it should be "whats wrong with this boost controller".

Dude are you serious right now? Why would you even waste your time typing that? No I can't take the boost controller apart.

 

[oldman]

1. Listen to romeen, I don't care what the SBR instructions says on their website, DO NOT TAP THE BOV LINE unless you enjoy a huge boost leak under boost, tap your J-pipe with a fitting and use that as your pressure source, it is not a matter of personal choice or preference like 97gstnick said

2. If I understand what you meant by "top" and "side" fitting, your connections are reversed. The fitting inline but opposite to the adjustment knob goes to the pressure souce (j-pipe), the fitting perpendicular to the body of the MBC goes to the wastegate.

 

[97gstnick]

He said he tried both ways. Maybe the op should put up some pics to make sure everything is cool.