[Gmecm] Re: Fuel economy

[Mark Romans]

By changing the switch point voltage.
No the commanded afr is going to try and be whatever you tell it to be, is 
it
accurate, probably not.
Changing the switch point of stoich and the commanded afr for hwy fuel are 
totally separate things.
Mark
----- Original Message ----- 
From: "gary" <gas- at charter.net>
To: <gmecm at diy-efi.org>
Sent: Thursday, September 15, 2005 1:40 PM
Subject: Re: [Gmecm] Re: Fuel economy


>> > I can also tell you that you can change the switch point on the
>> > 02 sensor to a higher or lower afr.
>
> I'd like you to explain how this is possible.
>
>> Yeah, the 02 sensor goes down to nothing!
>
> But that is not changing the switch point of the sensor, is it?
>
>> I can tell you that before I had the wb I used to try to go leaner and
>> the fuel economy goes down when it gets so lean that it lean misfires!
>
> Lean misfire... After my previous posts on this subject, no point to
> going there.  However, isn't it possible one (or some) cylinder(s) are
> going 'dead' from too lean a mixture to burn before others, or do you
> believe all cylinders have the same exact AFR?
>
> GAS
>
>
> ----- Original Message ----- 
> From: "Mark Romans" <romans at starstream.net>
> To: <gmecm at diy-efi.org>
> Sent: Thursday, September 15, 2005 9:01 AM
> Subject: Re: [Gmecm] Re: Fuel economy
>
>> I'm not saying it's accurate!   I'm just telling you what the code says!
>> Yeah, the 02 sensor goes down to nothing!  I do have a WB but I
>> haven't had time to try it with the Hwy mode enabled.  I can tell you
>> that before I had the wb I used to try to go leaner and the fuel economy
>> goes down when it gets so lean that it lean misfires!
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