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Old 09-15-2010, 11:43 AM   #1
Brokennarsil16
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MBC install question.

I searched, but came up with nothing, so although I'm sure everyone has seen this a million times...sorry.

I get that the boost controller goes from the wastegate actuator to the turbo/intake-before-TB. But on my stock setup, do I delete the electrical thing in line with the wastegate, the solenoid, i think? It's the small device under the intake, the one you do the restrictor mod on, if you don't know what I mean.
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Old 09-15-2010, 11:45 AM   #2
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Re: MBC install question.

Yes you can go from wastegate to turbo bypassing the stock controller. Going From the intake manifold works too but its cleaner and easier to just use the port on the turbo.
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Old 09-15-2010, 11:46 AM   #3
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Re: MBC install question.

Yeah, just keep the plug on it plugged in, and loop the lines on it. You don't need it anymore, it's previous job was to control boost, but now you have the MBC for that.


Edit: Son of a bitch, Talon beat me.
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Old 09-15-2010, 12:08 PM   #4
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Re: MBC install question.

Gotcha. Thanks guys.
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Old 09-15-2010, 12:44 PM   #5
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Re: MBC install question.

Yup. Anytime
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Old 09-15-2010, 01:05 PM   #6
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Re: MBC install question.

Okay, one more stupid question...

On my specific controller, http://www.hopupracing.com/tumabocofcos.html

It shows two arrows on the screw. A plus, and a minus. I assumed the plus meant turn this way for more boost, minus the opposite. However, according to what I've read, you turn out, like loosening a screw to take the boost as low as the controller allows. This seems backwards on my MBC, because of the arrow directions.

I just don't want to mistakenly turn it all the way up and wind up toasting something.
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Old 09-15-2010, 01:42 PM   #7
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Re: MBC install question.

Some you turn opposite directions which I always thought was stupid.
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Old 09-15-2010, 02:24 PM   #8
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Re: MBC install question.

So...should I turn it all the way out and fire it up? If it's the wrong way will it harm anything? I've still got the stock boost gauge, so it won't tell me too much, I don't think.
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Old 09-15-2010, 05:22 PM   #9
bertrenolds5
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Re: MBC install question.

I wouldn't install it until you get a vacuum boost guage on there, the stock boost guage is highly unreliable and is based on an ecu calculation of airflow. And here, check this out http://www.dsmtuners.com/forums/arti...val-1g-2g.html

You should consider removing some vacuum lines and it also shows where to put the MBC.
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Old 09-15-2010, 07:56 PM   #10
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Re: MBC install question.

Thanks a lot, bert. The pictures on that thread though, when I click them, it takes me to the imageshack sign-up page. Do I have to have an account to see the full-sized picture?

And I've already installed the controller. I turned it a few clicks in on the screw and drove it. It seemed great, a little more peppy maybe, but that could also be because of the exhaust system I just installed.

I went to drive it a few minutes ago however, and it was acting terrible! Whenever it started to build boost, it would surge and clunk and made me think the thing was coming apart. I'm guessing it's because of something I did, but I can't figure out what it may be. When driving in the low rpm though, (no boost I guess) it acted fine.

My journey with DSMs is starting on a good foot, I guess
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Old 09-16-2010, 12:58 PM   #11
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Re: MBC install question.

You need a real boost gauge before you do anything like that. Turn it back down.
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Old 09-16-2010, 12:59 PM   #12
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Re: MBC install question.

Quote:
Originally Posted by K_Mans_TSI View Post
You need a real boost gauge before you do anything like that. Turn it back down.
You're either hitting fuel cut because you turned it up too high or you now have a boost leak.
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