[s-cars] Severe Overboost

[Mark Strangways]

If you unplug the WGFV you should revert to low output mode. If you have
never changed the spring, it's said you should get 1.3 BAR ABS. If you have
a different spring in it , the boost will vary with that.
If you can build very quickly to 28 PSI there might be some form restriction
in the intake system. If it's a K24.. I'm surprised it will do 28 PSI even.
I would not be spooling up that high to often at all. The next shopping
spree will be for a new turbo if you do.

I would remove the top of the wastegate and make sure it operates smoothly.

Mark
----- Original Message -----
From: "Calvin & Diana Craig" <calvinlc at earthlink.net>
To: "Joseph Pizzimenti" <pizzoman at yahoo.com>; "Ed Walsh"
<rundeep_32 at yahoo.com>; <s-car-list at audifans.com>
Sent: Sunday, February 16, 2003 10:31 PM
Subject: RE: [s-cars] Severe Overboost


> Could this also be a WGFV problem.  What happens if you unplug the WGFV
> altogether?  Does the boost still go over?  If not it's an electronics
> problem, if so it is probably "mechanical", i.e. a wastegate problem.
> --Calvin
>
>
> -----Original Message-----
> From: s-car-list-admin at audifans.com
> [mailto:s-car-list-admin at audifans.com]On Behalf Of Joseph Pizzimenti
> Sent: Sunday, February 16, 2003 5:05 PM
> To: Ed Walsh; s-car-list at audifans.com
> Subject: Re: [s-cars] Severe Overboost
>
>
> Ed,
> Sounds like a wastegate problem.  You still have the
> stock spring in there?
>
> Joe
> --- Ed Walsh <rundeep_32 at yahoo.com> wrote:
> > Guys,
> >
> > My S6 with newly installed 1+ software and GM 3 bar
> > sensor is boosting to over 28 PSI, even though it
> > should see 22-23 max.  Not good.  When it does this,
> > boost builds very quickly at low RPM (2,200)then
> > rockets to ~28 or so PSI by 4,000 rpm, but  without
> > the corresponding kick.  Clutch is not slipping.
> > When
> > it hits ~28 PSI, the over boost safety circuitry
> > sharply backs off the boost until it is under
> > control,
> > then it starts to build again around 5,000 rpm. The
> > car does accelerate, but not with the oomph you
> > would
> > expect at those levels.
> >
> > I figured out how to swap chips in the ECU so I
> > tried
> > some III+ SW and the car still over-boosted.  So it
> > must be something else on the car that is not
> > functioning or is there a hose disconnected, etc?
> >
> > Thank you, Ed
> >