Recirculate that BOV until you have the money to do it the right way.

1. Recirculate that BOV.

2. The picture above is only for ball/spring type mbc. I also don't recommend tapping off the BOV line especially for a TurboXS mbc.

3. Connect the compressor (turbo) nipple to the bottom nipple of the mbc, connect the nipple opposite but inline with the adjustment knob to the actuator nipple, keep all hoses as short as possible.

Straight from BOV to intake manifold?

I never knew this tid bit of info.... glad you said something.

Soo... aftermarket J pipe w/o the nipple. Where would you recommend tapping for the MBC?

ddavisaf said:

Soo... aftermarket J pipe w/o the nipple. Where would you recommend tapping for the MBC?

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Tap one off the J-pipe yourself. Tapping off the compressor has many advantages and nothing to lose.

1. Minimize the possibility of boost spike due to short route pipping. This is especially true for TurboXS mbc which is already known for boost spike.

2. In the case of boost leaks, it will help prevent over spinning the turbo.

3. TurboXS mbc being a bleeder type valve might result in sucking in unmetered/filtered air during vacuum if tapped to the BOV line.

4. Many thinks that tapping off the BOV line is more accurate because it's the manifold pressure when in reality it doesn't matter because the boost gauge is tapped at the manifold no matter where you tap your pressure source for the mbc.

^ Agreed. Although this is a funky pic (in the dark in my garage & taken w/my cell phone) here's a pic of how I have my MBC setup. The tap isn't on the J-pipe but the lower IC pipe, my MBC is mounted to my MAF. Check the green dots.

only thing is, the bov is non-recirculatable, i hope i spelled that right, so i cant recirculate it. but im gonna sell the car with the mbc installed and the bov installed, so with this said how would i install the mbc? if not im just thinking of saving and buying a recirculated bov. dammit, which would be best? even though im already thinking i know the answer, im just lazy and dont got money....

SpoolinTalon2 said:

but im gonna sell the car with the mbc installed and the bov installed, so with this said how would i install the mbc?

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3. Connect the compressor (turbo) nipple to the bottom nipple of the mbc, connect the nipple opposite but inline with the adjustment knob to the actuator nipple, keep all hoses as short as possible.

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I have the turbo XS MBC on my 91 talon and i followed the instructions that came with the MBC. I tapped the BOV line and i have 1 or 2 pounds of boost spike. incase you don't have the instructions, i scanned them and attached the pictures. (notice the bottom of the MBC goes to the wastegate actuator unlike the picture shown above)

by the way, i did have it hooked up right off my j-pipe for a while and i still had the same boost spike. but judging by what other people have stated i guess going off the j-pipe would be safer than the BOV line while using the turboXS MBC.

this is just with the turboXS mbc??

me I connect my halman like the picture.. it's like this since 2 years, and I have no problem until..

after install, i have read that you should start with the boost at 0 and increase it from there. is there supposed to be ana ctual screw at the top of the mbc, cause i have the hole there but no screw. how are you suppossed to tell if you have too much boost or not enough?

SpoolinTalon2 said:

after install, i have read that you should start with the boost at 0 and increase it from there. is there supposed to be ana ctual screw at the top of the mbc, cause i have the hole there but no screw. how are you suppossed to tell if you have too much boost or not enough?

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Boost Gauge that is reading off of the Manifold. I suppose you could connect an air source from an air compressor to the inlet side of the MBC and feed a known pressure amount in, and slowly increase the pressure till you hear air rushing through it. Or set the outlet pressure (of the air compressor) to like 13 psi and then adjust the screw on the mbc till it starts to leak through the MBC's outlet. BUT, you still would have a different reading when it is installed in the system, that would be just a course setup. You would still need to fine tune it once it is setup. And thats why you should have the Boost Gauge installed.