got boost (slight return)?

[Derek Pulvino]

Ingo,

I'll give a look see...although I think a lower number on the boost gauge at 
idle is more vacuum, a situation I wouldn't expect to see with a leak in the 
intake path; i.e. when the key is turned on the system measure atmospheric 
pressure.  That pressure (atmospheric) is assigned a value of "1.0"  A lower 
number then would be more vacuum.

Derek P

>Derek,
>
>By what you describe, you have an air leak somewhere -- since you have less
>vacuum at idle and less boost on boost.  Check all of your vacuum hoses -
>paying particular attention to the one from the back of the intake manifold
>to the bypass valve.
>
>Ingo
>
>----- Original Message -----
>From: "Derek Pulvino" <dbpulvino at hotmail.com>
>To: <200q20v at audifans.com>
>Sent: Wednesday, December 28, 2005 1:18 PM
>Subject: Re: got boost (slight return)?
>
>
> > Kind of off the top topic, but has anybody seen were the boost seems to 
>be
> > across the board lower...in my situation whereas at idle the dash 
>readout
> > used to read 0.3 to 0.4, now it usually reads 0.2, with boost on the 
>high
> > side only going up to 1.6 or so?  I've seen low boost at the top end
>before,
> > but not with it reading lower at idle too.
> >
> > Derek P
> >
> >
> > Message: 2
> > Date: Tue, 27 Dec 2005 13:19:23 -0500
> > From: Phil Rose <pjrose at frontiernet.net>
> > Subject: Re: got boost?
> > To: "Andrew W. Schlueter" <andyschlueter at 4techwork.com>
> > Cc: 200q20V at audifans.com
> > Message-ID: <a06100504bfd73576cafe@[192.168.0.100]>
> > Content-Type: text/plain; charset="us-ascii" ; format="flowed"
> >
> > At 12:28 PM -0500 12/27/05, Andrew W. Schlueter wrote:
> > >i dont know if it is this cold weather here in ohio, but i am having
> > >hesitasion in boost. I am running chipped car with the 2.5 pt. ok here 
>is
> > >the issue. 3k rpm, full throttle, nice real fast spool up to 20psi. not
>any
> > >more. now it goes to 14psi, hesitates then jumps to 20psi. somtimes 
>when
>i
> > >am full throttle in 4th or 5th it will be at 20psi, it will quickyly 
>drop
> > >to
> > >14ish psi then right back up in a matter of a few secconds. you can 
>feel
> > >the
> > >loss of power. I am thinking of the N75??
> >
> > Sounds like it could be caused by a pressure "burp" from split hose
> > or loose clamp. How is the Michelin Man hose condition?
> >
> > Phil
> > --
> >
> > Phil Rose
> > Rochester, NY
> > mailto:pjrose at frontiernet.net
> >
> >
> >
> >
>
>
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