S4 / RS4 (B5 Platform) Discussion Discussion forum for the B5 Audi S4 & RS4 produced from 1998-2002

Since there seem to be a lot of questions on how N75 vs MBC vs Both affect boost, I drew this up...

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Old 03-19-2004, 09:39 AM
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I feel like I am talking to myself when I respond to you
Old 03-19-2004, 09:39 AM
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Default Unless you've got fueling upgrades, you probably want the MBC in parallel with the N75.

Otherwise, you run the risk of running too lean up top where the injectors are maxed out and can't handle the extra airflow.

-Dave Pramanik
Old 03-19-2004, 09:40 AM
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Okay, from now on, you are in charge of answering questions! We end up saying the same thing
Old 03-19-2004, 09:43 AM
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"Freak of nature"... I like that!
Old 03-19-2004, 09:44 AM
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I'll accept that awesome responsibility!
Old 03-19-2004, 09:46 AM
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Great minds...
Old 03-19-2004, 09:47 AM
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I'm far far far far far from a great a mind, but thanks!
Old 03-19-2004, 09:50 AM
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Default i was always under the impression that you coulndt run an mbc on

s4's. someone, somewhere told me that. any reason? is there anything special i need to do to run an MBC?
Old 03-19-2004, 09:51 AM
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And i thank you both
Old 03-19-2004, 09:51 AM
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damn... looks like I need a MBC - Why would one not do it ?


Quick Reply: Since there seem to be a lot of questions on how N75 vs MBC vs Both affect boost, I drew this up...



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