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wtf is wrong with my MBC??

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DurangoGS-T

15+ Year Contributor
69
0
Jul 6, 2004
Wichita, Kansas
for some reason i can't get my MBC to raise the boost at all. i disconnected the hoses on the compressor housing outlet, wastegate, intake, etc, and i capped the hole on the intake and housing. then i t'd the boost pressure source side of the MBC (joep) into the intake to bov line and put the other side of the mbc to the wastegate. when i turned the mbc fully to 'increase' it only raised it from .8 to .9 bar.

semi-dejected, i tried moving the pressure source from the intake/bov line to the compressor housing outlet. now whether the mbc is all the way out or in, it only boosts .8 bar. what's wrong? did i hook it up incorrectly or do i have a massive boost leak of sorts? something wrong with the bov (its a stock 2g - leaky?)? it did the same thing on my friends' crappy bleeder type that he let me use for a while. i'm getting seriously frustrated!
 
update: i just disconnected the line from the mbc to the wastegate actuator and went for a drive...same result. i'm starting to think its my 2g pos bov. i've got a 1g on the way already, but could someone confirm that as the culprit? thanks.
 
YES! Its definitely youre pos 2g plastic bov, get a 1g bov and crank it to 15psi.
 
whew..i thought it was gonna be something way more pain in the ass. i got the 1g bov on the way and the flange is gonna be ordered tomorrow. any idea where i can get the bolts for that? (hopefully not from Satan)
 
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