Re: S4 turbo pressure measurement

[ti@bazooka.amb.org (Ti Kan)]

Morten Astrup Steen writes:
> My digital turbopressure gauge shows 0.5 at idle. approx. 0.9-1.2 at
> normal driving and when really hitting it I've seen 1.7 and I think 1.8
> once or twice. Is this correct?
> 
> I thought it should be 1.0 at idle (atm. pressure) and only below 1.0
> when breaking with the engine downhill (so that underpressure would be
> created). Is this my paranoia or is something not right?

Your readouts sound just fine to me.  It shouldn't read 1.0
at idle because the intake should be at part vacuum.
It should read 1.0 when the engine is not running (but with the
ignition on).  When running, it should exceed 1.0 only when
the turbo is making boost.

-Ti
96 A4 2.8 quattro
84 5000S 2.1 Turbo
80 4000 2.0
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