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Go Back   IWSTI.com: Subaru WRX STI Forums > IWSTI Engine & Drivetrain > How-To / Install


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Old 10-12-2009, 12:46 PM   #1
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Default take out hallman mbc and install stock boost controller?

don't know how to take out hallman mbc and reinstall stock boost controller. Can someone give me step by step instructions on how to do so? thanks.
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Old 02-03-2010, 09:39 AM   #2
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Default Re: take out hallman mbc and install stock boost controller?

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Originally Posted by toofast4u2 View Post
don't know how to take out hallman mbc and reinstall stock boost controller. Can someone give me step by step instructions on how to do so? thanks.
bump please
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Old 02-03-2010, 09:43 AM   #3
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Default Re: take out hallman mbc and install stock boost controller?

Post a pic of how your MBC is installed. Also do you have a stock solinoid already?
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Old 02-03-2010, 09:21 PM   #4
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Default Re: take out hallman mbc and install stock boost controller?

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Originally Posted by BAD STI View Post
Post a pic of how your MBC is installed. Also do you have a stock solinoid already?
ill try to get that

generally how much are stock solinoids?
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Old 02-07-2010, 10:57 PM   #5
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Default Re: take out hallman mbc and install stock boost controller?

i see no reason that your car would not have the stock solenoid still on its original place... it makes no sense to remove it... if you for some reason or another got rid of it and tossed it... a lot of people upgraded to a 3 port solenoid (id recommend that if you did toss your original cheaper and more efficient <-NEED TO TUNE BEFORE ATTEMPTING TO DRIVE ON A 3PORT BCS NO IFS AND/OR BUTS 3PORT WITHOUT TUNE => BYE BYE MOTOR AND TURBO!!!)

either way this is what you are looking for:

step 1. remove manual boost controller by removing all connections off it
step 2. identify line 1, line 2, and line 3 from the pictures below
step 3. connect them accordingly
(sidenote: the restrictor pill is in fact not a restrictor for boost it actually aids in getting the turbo to spool by restricting the amount of air to wastegate, you will need this to regulate boost properly otherwise you will be restricted to slow spool and low boost 7-11psi and car will feel sluggish there is a different size pill needed for different turbos i dont know the science or math behind it so i cant help you there)


hopefully this will clear things up a bit...

p.s. why are you wanting to get rid of the MBC???
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Old 02-07-2010, 11:58 PM   #6
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Default Re: take out hallman mbc and install stock boost controller?

thank you for instructions as this will most likely come in handy for smog, but i already solved problem but again thank you as i will use this again for smoging.
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Old 02-08-2010, 06:56 AM   #7
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Default Re: take out hallman mbc and install stock boost controller?

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Originally Posted by spoolinX View Post
ill try to get that

generally how much are stock solinoids?
I have one for sale. Ill do $30 shipped.
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Old 02-08-2010, 09:12 PM   #8
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Default Re: take out hallman mbc and install stock boost controller?

thanks for the diagram, i will try to see if the stock solenoid is still there
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