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car won't boost over 6 psi :(

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Old 07-03-2005, 10:36 PM
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Default car won't boost over 6 psi :(

i went and got my car tuned today , but i had my boost at 5psi just because i didn't want to turn it up until i got tuned since my basemap was made for a smaller turbo. well we were doing our WOT runs and once we were done i went to tun up the boost. i have a homemade mbc and it usually worked before but now i can't get it to go over 6-7psi.

basically i have my mbc almost all the way closed and nothing changes.

my set-up is d16y8
.48/.60
greddy type S
CCA fmic
home made mbc

a friend of mine gave me a turboxs mbc to try but it looks kinda weird. just a long hose with a T at one end and a **** at the other. anybody know how to use it or what way it goes?

anybody have any suggestions on what could be keeping my boost low? im gonna try messing with the wastegate and boost controller in the morning.
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Old 07-04-2005, 12:31 AM
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Default Re: car won't boost over 6 psi :(

thats not a turboxs mbc, i can tell ya that much.
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Old 07-04-2005, 04:00 AM
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Default Re: car won't boost over 6 psi :(

sounds like one of those ebay mbc"s sounds like your the proud owner of a boost leak.

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Old 07-04-2005, 10:08 AM
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Default Re: car won't boost over 6 psi :(

Originally Posted by ****
thats not a turboxs mbc, i can tell ya that much.
i've never seen one like it but i will get some new batterys for my digicam and post a pic
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Old 07-04-2005, 11:03 AM
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Default Re: car won't boost over 6 psi :(

you got boost leak
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Old 07-04-2005, 12:29 PM
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Default Re: car won't boost over 6 psi :(

sounds like boost leak ...could be coming from your poopy mbc ... among 19,000 other things
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Old 07-04-2005, 08:01 PM
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Default Re: car won't boost over 6 psi :(

here is the new MBC i was gonna try, if i could figure out how it worked
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Old 07-04-2005, 08:08 PM
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Default Re: car won't boost over 6 psi :(

Originally Posted by jeffsciv23
here is the new MBC i was gonna try, if i could figure out how it worked
umm, thats 1/2 of a turboxs mbc, now all you need is the other half.
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Old 07-04-2005, 08:20 PM
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Default Re: car won't boost over 6 psi :(

Originally Posted by ****
Originally Posted by jeffsciv23
here is the new MBC i was gonna try, if i could figure out how it worked
umm, thats 1/2 of a turboxs mbc, now all you need is the other half.
lol, maybe i'll pick up a new boost controller soon
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Old 07-04-2005, 08:27 PM
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Default Re: car won't boost over 6 psi :(

ahaha...

try making one yourself. It's cheaper that way
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