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Old 09-11-2013, 12:43 AM   #1
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Manual Boost Controller

Hi,

I have a MBC for my saab because I could not find the APC Solenoid locally and I wish to get the car going this week once my other parts arrive.... I wish to bypass the solenoid with the MBC which has 2x Nipples, does anyone know how I should connect this correctly? I know how the W and C hose connect ok but what do I do with the R hose? Also because the solenoid itself is no good, is this ok just disconnected?

Cheers.
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Old 09-11-2013, 04:14 AM   #2
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You don't bypass the APC with the boost controller, you just put it inline on one of the hoses (dont remember which one right off) to trick the APC into letting it boost more. If the APC isnt functioning you will have no real control over boost and could mess stuff up. Never use mods to cover up for needed repairs. It doesn't end well.
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Old 09-11-2013, 04:38 AM   #3
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Quote:
Originally Posted by tuner4life View Post
Never use mods to cover up for needed repairs. It doesn't end well.
its been said many many many times.

Stage 0 FIRST. aka everything else functioning exactly as it should. then upgrade.
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Old 09-11-2013, 06:37 AM   #4
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I don't think he's trying to upgrade his car..think he's just trying to get it functioning.

If that's the case, one hose from compressor to inlet port on MBC, one hose from MBC output to wastegate. Block off the return hose to the intake with a plug or cork or whatever.

Set the MBC to stock boost levels, maybe a little lower to be on the safe side. Your car will retard ignition still to combat any possible detonation, but it can no longer pull boost in these instances, so err to the safe side.
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Old 09-11-2013, 02:07 PM   #5
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http://www.smartperformance.net/inst...mbcinstall.pdf
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Old 09-20-2013, 12:39 AM   #6
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I had something like that on my 9K...it wasn't letting me get full boost so I took it off and went back 2 stock still not getting full boost so I'll b buying a new 1 kinda pricey but if u can't find a good used 1 which isn't that hard that there's lots of ppl here that seem 2 have used parts and eEuroparts or thesaabsite can get u new parts...but ask urself is this something u want running 4 "THE NOW" or 4 "THE LIFE OF YOUR OWNERSHIP OF THE CAR"???
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Old 09-20-2013, 01:22 AM   #7
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Thanks for your reply guys, I did get the MBC and connected it, I could not find the solenoid, I have not tested it as yet as I am still waiting for someone with a Tech2 to calibrate my new ABS/TCU ECU which died, I'm a fair distance from any dealer with a Tech2 (only 1 I can find) so it's just getting time to get it towed there, I'm having so much trouble getting any mechanic to do it because they won't, they keep telling me GM is the only one that can so I have no choice because they are the only one close enough and charge a right leg for it.
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Old 09-20-2013, 01:36 AM   #8
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Where are you located?

You could try Ebay for a good APC solenoid, but a well set MBC and premium fuel will run the car no problem.
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Old 10-04-2013, 07:35 AM   #9
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I'm in Tasmania, Australia, I'm just trying to decide if I should remove TCS or just replace the throttle body at the moment, I ended up purchasing a Tech2 and the problem was the throttle body, so when I finally decide what I want to do I can then set up the MBC properly.
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Old 10-12-2013, 09:07 AM   #10
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A tech 2 ? Erm isn't that worth a bit more than an a Genuine Solenoid valve? Likely more than ..That ..car I would imagine.
MBC is something a teenager with no money and no knowledge retrofits. Simply connecting the three solenoid hoses to emulate an LPT setup, works Fine... for free.
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