mbc problems need help asap

[scaryfastdsm]

hello i have a mbc and im trying to install it now and its stumped me.......

i have a tee and a adjuster.

the tee is hooked up to the waste gate and the j pipe and the hose comming off it it goes where?
the adjuster has to lines. one to go to waste gate and one to go idk.

 

[nfernotalon]

You shouldnt have a vacuum line left it should from the j pipe to one side of the MBC and another line from the compressor to the other side of the MBC thats it

 

[scaryfastdsm]

please help i want to get pressure off the j pipe not the bov

 

[scaryfastdsm]

so i dont need the tee at all

 

[nfernotalon]

No its not a good idea to hook it up to the BOV line anyway, just hook it up like I said

 

[scaryfastdsm]

thanks

 

[nfernotalon]

here: http://www.dsmtuners.com/forums/articles-turbo-system-intercooler/237982-best-way-install-mbc.html

 

[dikdiamond]

This is what I used as a guidehttp://www.dsmtuners.com/forums/articles-turbo-system-intercooler/237982-best-way-install-mbc.html



Edit:Lol you beat me to it!

 

[scaryfastdsm]

hey i put that mbc on its its turned all the way down but its boosting like 14psi on my stock gauge. and when i turn it up my psi drops.idk and if its backwards wouldnt my psi be alot higher?

 

[edenTSI]

you should go buy a boost gauge. the stock one isnt accurate when raising boost levels. plus its not that safe. should have got a boost gauge before you got a mbc.

 

[nfernotalon]

Didnt know you had the stock boost gauge still, you need to go get an aftermarket boost gauge first before you mess with it, the stock one is not accurate at all.

 

[scaryfastdsm]

i do have one. its not hooked up yet cus its on its way in the mail. i just wanna boost like 7 psi on my stock boost gauge now untill i get it.

 

[nfernotalon]

You cant use your stock boost gauge its not accurate at all! Wait til you hook up the other one..

 

[kenamond]

Because it has a "T" and an "adjuster" this tells me it's a bleeder. You have to hook it up differently (almost exactly like the stock BCS).

Does it say "High Performance" on the side and have two nipples coming out of the side of the body and a knob on the end of the body? If so, it's a bleeder.

Can you post a picture of the pieces?

And you need an aftermarket boost gauge like others have said. $50 for an Autometer boost gauge and an a-pillar gauge pod.

 

[GofaST4life]

kenamond are you talking about this...im having issues as well, and i have thread in the same section...

EDIT: idk why my pic didnt show up

the pic is in this link http://www.dsmtuners.com/forums/newbie-forum/281379-mcb-question.html

 

[kenamond]

I saw your post, too, gofast4life.

You need four sections of hose, a T fitting and the boost controller (bleeder style)...
Hose #1 goes from the compressor outlet or j-pipe nipple to the T-fitting.
Hose #2 goes from the T-fitting to the WGA nipple.
Hose #3 goes from the T-fitting to the MBC nipple (not sure which one, try both ways)
Hose #4 goes from the other MBC nipple to the intake pipe where the BCS bleeder line used to connect.

If you turn the knob on the MBC and can blow *more* air through it, that's the direction you turn it to increase boost. The other way...yep you guessed it...decreases boost.

That is *exactly* how the stock BCS is connected, because...you guessed it...the stock BCS is a bleeder style boost controller. However, it's snazzier because it has an internal solenoid which closes off all air (which drops boost to 9psi or so) if it thinks the engine is acting up.

So if you have the BCS still installed, you know what the new MBC install should look like.

Like I said earlier, there are two nipples on the MBC, and I don't know which goes to the T vs. the intake pipe, and either may work exactly the same. But it's not too hard to try both ways. Just remember that the more leak you get through the MBC, the higher your boost will go. Less leak is less boost.

 

[GofaST4life]

thats very helpful...ill try my best...

thank you

 

[GofaST4life]

So if you have the BCS still installed, you know what the new MBC install should look like.

sorry, i read it a few more times to get the terminology...yes my BCS is still installed, so could i just use the same lines and switch in the new hardware, or just use it as a guide to replace the BCS?

 

[kenamond]

sorry, i read it a few more times to get the terminology...yes my BCS is still installed, so could i just use the same lines and switch in the new hardware, or just use it as a guide to replace the BCS?

Either way. The BCS has a nice bracket so that it's bolted to the frame. Yours will have to be held in place somehow. And take a small section of hose and connect one end to one nipple of the BCS and the other end to the other nipple of the BCS to keep dirt out of it (in case you want to go back to stock for some reason). Leave the BCS electrical plug connected or you may throw a code.

Then the two vaccuum lines you took off the BCS connect to the new MBC. I leave it to you if you want to change out the vaccuum lines and relocate stuff. Just keep the vaccuum plumbing "schematic" like the stock BCS (things connected to the right other things).

Keep it out of the radiator fan, away from the scorching hot exhaust manifold and turbine housing, etc. And you probably want it somewhere you can reach so that you can adjust it.

Start with boost all the way down, work your way up until you hit the boost level you know you can safely run (because you have a logger, right?). Don't blow up the motor or trash the turbo by turning the boost up higher than your current setup can support. That would be bad.

 

[GofaST4life]

i already have an over boosting problem (previous owner was an IDIOT!), and was told buy my fellow tunners on here that a MBC would help fix my issue...

No, i do not have a logger at the moment, i have my plans for my car and its in there, im just short on cash at the moment since my place of work had to close down...

thankx for all the info.
ill tackle this project asap.

 

[scaryfastdsm]

ok i have the same mbc ill try it like that.

 

[GofaST4life]

scaryfastdsm, when are you trying the install?

 

[scaryfastdsm]

i just installed it. and its all the way down and i still feel like im boosting hella.........-boost tightins screw +boost opens spring. installing boost gauge when i recieve it.

 

[GofaST4life]

i have the install PDF if anybody wants it

 

[kenamond]

i have the install PDF if anybody wants it

Can you explain in words what the installation should be? Or is there an image in the PDF that you can post? That'd help the other guys with that MBC, and I'd learn for sure (hopefully) how it should be installed (because I'm the curious type).