Fuel tuning...

[Bruce Plecan]

-----Original Message-----
From: David A. Cooley <n5xmt at bellsouth.net>
To: diy_efi at efi332.eng.ohio-state.edu <diy_efi at efi332.eng.ohio-state.edu>
Date: Sunday, March 14, 1999 10:45 AM
Subject: Re: Fuel tuning...


No, the oem gm O2 sensor in you car is not temperature compensated.
Period..  So the reading change by EGT.  This is not the proper way to do
it.
Bruce


>>>I'm going by the O2 voltage readings... I know the Buick GN guys like to
>>>shoot for 780-820mV at WOT, but not sure if that applies here or not.
>>
>>Be careful with those numbers they are from the old OTC equipment and
>>those other
>>scantools that are set up the same.  When read on a Diacom the reading
>>would be
>>about 890 to 930 . . .
>
>So actually, the numbers I'm seeing, since calculated from the GM formulas
>for this data stream, might be pretty close to optimum?
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>           David Cooley N5XMT           Internet: N5XMT at bellsouth.net
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