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-   Turbo / Engine / Drivetrain (http://www.mitsustyle.com/forums/forumdisplay.php?f=91)
-   -   Boost fade (http://www.mitsustyle.com/forums/showthread.php?t=13016)

FattyBoomBatty 05-04-2007 10:05 PM

Re: Boost fade
 
Quote:

Originally Posted by Pushit2.0 (Post 157793)
Most side to side FMIC will produce 1-2 psi pressure drop. The turbo spits out hot air then you cool that air off and it becomes more dense, thus would have less pressure, or atleast thats my take on it.

~John

No, that's physics. :)

And, Kracka - sounds to me like he lowered it one full turn, then back up two full turns, so it was only one turn above where he had it before.

Bad boost controller. My friend and I were dynoing his stock turbo'd conquest at MAP and they let us use a manualk boost contorller they had sitting around, it would do the same thing, boost up to 15 psi then fall quickly to wastegate pressure.

Kracka 05-05-2007 12:03 AM

Re: Boost fade
 
There is nothing wrong with his MBC, he tested another; he needs to find a happy median between where it sits now and where it becomes uncontrollable.

FattyBoomBatty 05-05-2007 09:53 AM

Re: Boost fade
 
He tested another one that spiked and he let off and switched back. Read.

Kracka 05-05-2007 02:56 PM

Re: Boost fade
 
Quote:

Originally Posted by FattyBoomBatty (Post 189683)
He tested another one that spiked and he let off and switched back. Read.

I do read, I also talked him through it on the phone.

asshanson 05-06-2007 03:29 PM

Re: Boost fade
 
Yes, I have a brand new TurboXS mbc, same thing happened. I'll try upping the boost in little increments.

Kracka 05-06-2007 06:48 PM

Re: Boost fade
 
On my Joe P., 1/8 turn = 1 psi.


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