O2 sims

[Eric Bryant]

> From: Brian L Massey [mailto:blocklm at juno.com]
> Subject: Re: O2 sims
> 
> That's why I've been puzzled each time someone mentions these
> "simulators". Has *anyone*  tried just a simple static 
> voltage of around
> 0.5 V, preferably buffered?

A couple of guys on the Impala SS digest reported that placing a
resistor/diode circuit (resistor and diode in series; diode cathode tied to
ground, resistor tied to some positive voltage, output to PCM obtained from
diode anode/resistor junction) on the post-cat inputs (output voltage of
about 0.6-0.7 V) works just fine.  

According to what I've read, the PCM just wants some sort of stable value
that's not "swinging" along with the pre-cat signal.  I gotta believe that
it's tolerant of some voltage offset, given the reality of the situation (GM
doesn't like MIL events any more than we do). 

Eric Bryant
mailto:bryante at ghsp.com
http://www.bryantperformance.com 
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