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dumb question boost problem

2132 Views 8 Replies 4 Participants Last post by  dr0wningless0n5, 
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ok so its been really cold lately i live in MA by the way and for the past like 2 or 3 weeks ive been running only like 10-12 psi and vac pressure went from like 20 up to 25-29 i have boost gauge installed and its been working properly and i just installed my mbc and bov today

can someone please tell me if theyre having the same issues or whats going on? :confused:
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Warrtalon
dr0wningless0n5 said:
ok so its been really cold lately i live in MA by the way and for the past like 2 or 3 weeks ive been running only like 10-12 psi and vac pressure went from like 20 up to 25-29 i have boost gauge installed and its been working properly and i just installed my mbc and bov today

can someone please tell me if theyre having the same issues or whats going on? :confused:
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No one else will have this issue unless they have the same problem. This isn't a weather issue. What you are seeing is wastegate pressure, which is 11psi. This means you hooked something up wrong or messed up a connection when doing your boost gauge. If the boost dropped to 11psi randomly at no point in time near an installation, then I would guess something came loose or the boost control solenoid stopped working.

Ok, so you installed the MBC/BOV today. I assume it all works now, or did nothing change? If nothing changed, then something is installed wrong. Let me know exactly how you connected the vaccuum lines for the MBC, and what BOV did you install?
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Warrtalon
So then there's no problem anymore? Do you need help with anything?
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Warrtalon
dr0wningless0n5 said:
yea there is the problem im still only boosting like 10 lbs when i was at like 19 for the longest time and its been like that for a few weeks now and i dont know why i dont know if it is the really cold weather i was hoping maybe someone would know
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When I asked about the MBC/BOV, you said those just got installed and that they were working fine, but you are now saying they are NOT working fine, because you are still only seeing 11psi? If the MBC was working, you'd be able to adjust the boost. 11psi is the minimum you can run due to the wastegate's strength. The MBC should allow you to raise the boost up to 20-21psi. Does it not change anything when you crank up the boost?

If it doesn't work, then it's not connected properly, or you mistakenly re-used the stock hosing with a restrictor pill still in it or something like that. There are a bunch of intricate things involved with the boost lines, which is why I need to SEE or HEAR exactly what you did...not just that you checked the connections and they're fine. I need to know exactly how the MBC is connected, where the vaccuum lines are going from each MBC port, which nipples you used, which hoses you used, how the BOV is connected, whether or not you capped off the intake and BCS, whether or not the BCS is still connected electrically, etc.
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