[Diy_efi] WB O2 system

[Tom Sharpe]

All well taken - and I'm talking about "Indicated" AFR. I'm assuming that 
*stoich* is at ~14.7 "Indicated" on a 10% gasahol motor with the DIY-WB 
petrol meter. 

I want to try and use the DIY-WB on an alcohol only motor - I'm assuming 
that *stoich* will still be ~14.7 "Indicated" although we will be ~6-7 and 
12.x "Indicated" should be a good starting point... to find what she 
wants...  am I OK??

Also, has anyone tried heating alcohol to 180-200 deg. before injecting? 
Might help combustion - intake still should be plenty cold. Thanks - TomS
 

On Thu, 20 Jun 2002 09:34:41 -0700, Garfield Willis <garwillis at msn.com> 
wrote :

> On 19 Jun 2002 21:21:10 -0000, "Tom Sharpe" <twsharpe at webmail1.mtco.com>
> wrote:
> 
> >Will a NB sensor side by side with 
> >a WB tell is where stoich is???  If so, we might be able to guestimate 
10% 
> >rich (or lean).  I'm talking relative here.  We still need a dyno to get 
> >the 'best' numbers.   TomS
> 
> Uhhh, I think I see from whence the confusion here. When I said you
> might be lean when your meter indicates rich, I meant relatively
> leaner/richer, compared with petrol AFR readings. I did NOT mean your
> instrument might read rich of *stoich* when you're actually lean of
> stoich; that would mean stoich itself had shifted, which thankfully
> doesn't happen with these sensors. If your idea above is expressing the
> concern that you need 'another sensor' to even find where stoich is,
> nope not necessary.
> 
> Here's my quote verbatim:
> >It's conceivable that with
> >the right mix of additives, you could actually BE leaner, while your
> >petrol-calibrated sensor/meter INDICATES 'richer'.
> 


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