Re: 5K Boost at 7000'

[Colin Hames <cchames@mm.com>]

I read somewhere Audi didn't have safety systems in place on the turbo until
later years.  Like maybe '91.  Maybe earlier since I believe you drive an
'89.   It was also noted anyone running a heavier wastegate spring ( 1.8 bar
) with ECU upgrades at high elevations could overrrev the turbo.   Anyway,
it felt great smoking people up those 4 lane passes.

Colin


Daniel Hussey wrote:

> Those cars have an altitude sensor which SHOULD give you lower boost as
> there is less air resistance and the turbo can spin more freely causing
> impellar damage.  Built in safety system.
>
> My car felt slow as hell out there.
>
> Later,
> Dan
> Like sea level too much!
>
> -----Original Message-----
> From: Colin Hames <cchames@mm.com>
> To: Steve Sherman <Steve.Sherman@cyrix.com>
> Cc: quattro@audifans.com <quattro@audifans.com>
> Date: Thursday, July 01, 1999 1:35 PM
> Subject: Re: 5K Boost at 7000'
>
> >I was just in Colorado 2 weeks ago (9 - 12,000ft )with my stock 5TQW and
> >got 1.4 bar every time.  The low end was WAY off but that was to be
> >expected in the thin air.  Once on the boost,  it ran like I was home in
> >Minnesota.
> >
> >Colin Hames
> >'86 5TQW
> >'98 Passat 1.8t
> >
> >Steve Sherman wrote:
> >
> >> I'm curious, what is the "correct" (eg no vacuum leaks, everything
> >> working right) boost that one should expect from a 5KCST at high
> >> altitudes, say 600-8000' above sea level?  Anybody know for sure?
> >>
> >> Steve
> >