 Can someone help me with my mbc? |
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 Oct 2 2005, 09:10 PM
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#1
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 Eats and sleeps DSM jargin.  Group: Members Posts: 1,108 Joined: 2-October 05 From: Waverly, Illinois Member No.: 636  |
I have a mbc on my car. I have the bolt adjusted all the way in and I'm still getting way over 20psi at wot. Is there a reason that I can't adjust it in anymore. I am running stock turbo and innercooler also. I t'ed in on the line that runs to the blowoff valve. And ran my out down to the wastegate. Screw is in as far as it will go. Any ideas would help and thanks.
-------------------- Thanks, Bud!
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Oct 2 2005, 09:19 PM
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#2
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 Eats and sleeps DSM jargin. Group: Members Posts: 1,754 Joined: 25-June 04 From: 61554 Member No.: 314 |
if your looking for more boost I would try a stiffer spring
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Oct 2 2005, 09:21 PM
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#3
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Eats and sleeps DSM jargin. Group: Members Posts: 1,108 Joined: 2-October 05 From: Waverly, Illinois Member No.: 636 |
No, I would like to drop it to about 15-16 psi.
-------------------- Thanks, Bud!
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Oct 2 2005, 09:21 PM
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#4
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 DSMCentral Freak Group: Members Posts: 291 Joined: 6-May 04 From: Mahomet Illinois Member No.: 287 |
has it worked in the past and just stopped working or has it been like this since install?
-------------------- it's not a dsm unless it's leaking something
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Oct 2 2005, 09:24 PM
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#5
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Eats and sleeps DSM jargin. Group: Members Posts: 1,108 Joined: 2-October 05 From: Waverly, Illinois Member No.: 636 |
I just put this thing on last night. Always above 20 psi at wot. I have to feather the pedal to get my 16 psi.
-------------------- Thanks, Bud!
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Oct 2 2005, 09:28 PM
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#6
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Eats and sleeps DSM jargin. Group: Members Posts: 1,754 Joined: 25-June 04 From: 61554 Member No.: 314 |
back the bolt out a little bit, in turns up the boost out turns it down (thats the way mine works)
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Oct 2 2005, 09:31 PM
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#7
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Eats and sleeps DSM jargin. Group: Members Posts: 1,108 Joined: 2-October 05 From: Waverly, Illinois Member No.: 636 |
I'll give that a try and see what happens. Thanks man. Why do they say in the vfaq to start all the way in?
-------------------- Thanks, Bud!
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Oct 2 2005, 09:37 PM
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#8
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Eats and sleeps DSM jargin. Group: Members Posts: 1,754 Joined: 25-June 04 From: 61554 Member No.: 314 |
not sure about that never read the vfaq on it
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Oct 3 2005, 09:41 AM
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#9
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 Zen Master DSM Group: Moderators Posts: 3,008 Joined: 10-January 01 From: in front of you Member No.: 5 |
Do you have a link to that vfaq? If that's what it says, someone needs to speak up to the guy who owns it. To reiterate what mitsu90 stated, backing the screw out of the mbc lowers the boost, turning it in increased the boost.
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Oct 3 2005, 11:40 AM
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#10
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DSM Tech Wizard Group: Members Posts: 2,404 Joined: 16-December 03 From: Fletcher/Bloomington Member No.: 214 |
What he ^ said.
-------------------- "I hear he tunes the space shuttle also...and that thing is fast"
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Oct 3 2005, 01:07 PM
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#11
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Eats and sleeps DSM jargin. Group: Members Posts: 1,108 Joined: 2-October 05 From: Waverly, Illinois Member No.: 636 |
Thanks guys for all your help. It was exactly what you said.
-------------------- Thanks, Bud!
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Oct 3 2005, 03:42 PM
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#12
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Eats and sleeps DSM jargin. Group: Members Posts: 1,754 Joined: 25-June 04 From: 61554 Member No.: 314 |
thats what were here for
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Oct 3 2005, 07:12 PM
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#13
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 Post Master Group: Members Posts: 780 Joined: 14-July 04 Member No.: 338 |
QUOTE (mitsu90 @ Oct 3 2005, 03:42 PM) thats what were here for Thats right! We're all about helping others out with cars, finding answers to questions, keeping each other warm at night.............you know, that sort of thing. -------------------- QUOTE (gsxracer80 @ Oct 31 2006, 12:41 AM)
thanks hcar.... I am still massaging that area trying to get it ready...  |
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Oct 3 2005, 07:40 PM
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#14
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 Eats and sleeps DSM jargin. Group: Members Posts: 1,995 Joined: 27-November 04 From: Yates City IL Member No.: 389 |
Yeah, what he said....except the keeping warm part
-------------------- 92 Eagle Talon TSI AWD "The Black Golfball" How fast can a 14B go???
91 Chevy C1500 "Problem Child" **SOLD** 01 Impala DD 07 Trailblazer Wife's new DD Cars run on blood, sweat, and horsepower... Without the first two, you can't get the last" SOB Racing "Sitting On Blocks" |
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Oct 3 2005, 11:53 PM
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#15
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 DSMCentral Freak Group: Members Posts: 257 Joined: 21-July 04 From: Normal Member No.: 351 |
some aftermarket MBC's are oposite of the DIY boost controllers that most of us run. i have never read the article on VFAQ but i know the turboXS MBC is oposite of the DIY MBC.
and as a referance the reason your car was running so much boost was because with the passage closed (screw all the way in) the wastegate actuator wasn't getting any pressure and the actuator never opened the wastegate. i used to have to think through the process when i first got my car so sometimes it helps to remind you which way to turn the screw. --------------------  |
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Oct 4 2005, 12:32 AM
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#16
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 Post Master Group: Members Posts: 810 Joined: 9-July 03 From: Bloomington, IL Member No.: 151 |
QUOTE (jvb6806 @ Oct 3 2005, 11:53 PM) some aftermarket MBC's are oposite of the DIY boost controllers that most of us run. i have never read the article on VFAQ but i know the turboXS MBC is oposite of the DIY MBC. and as a referance the reason your car was running so much boost was because with the passage closed (screw all the way in) the wastegate actuator wasn't getting any pressure and the actuator never opened the wastegate. i used to have to think through the process when i first got my car so sometimes it helps to remind you which way to turn the screw. and surely you remember my first 30psi burst as well 
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