IW STi Forum banner

take out hallman mbc and install stock boost controller?

1 reading
22K views 10 replies 5 participants last post by  venom225  
#1 · (Edited by Moderator)
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.
 
#5 ·
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)
Image
Image
Image


hopefully this will clear things up a bit...

p.s. why are you wanting to get rid of the MBC???
 
#11 ·
ohh i thought it was to prevent over boost not under boost though thats why i asked i guess it makes sence though your sticking a restriction in the tube that goes to the actuator arm which opens the wastegate thus dumping out exhaust gases that otherwise would spin the compressor to make more boost interesting!