[Diy_efi] WB free air calibration

[rob files]

Ok, understood it is not lab grade (what tolerances qualifies as "lab grade" 
anyway).  Still I would like to minimize error if possible.  Is adjusting 
the free-air reading to match exactly 4v a good way to minimize Vout error?

I did have a chance to install it last night, but only spent 1 minute 
observing my idle mixture.  I had to quit because I was going into my nerd 
trance and starting to neglect the wife and daughter :)

On my base fuel map, the cold idle was showing 2v, which is about 12:1.  
Neato.  Full blown fuel tuning will begin shortly!

-Rob
'88 MR2 Supercharged with Haltech E6k and diy-WB!


From: "Bruce" <nacelp at bright.net>
>Reply-To: Diy_efi at diy-efi.org
>To: <Diy_efi at diy-efi.org>
>Subject: Re: [Diy_efi] WB free air calibration
>Date: Wed, 29 May 1996 13:30:24 -0400
>
>
>
>It's not a lab grade devise.
>get it on the car, and use it <G>.
>Unless, your just extremely lucky, you'll immediately see where your off in
>the calibration.
>Bruce
>
>
>----- Original Message -----
From: "rob files" <rncfiles at hotmail.com>
>To: <diy_efi at diy-efi.org>
>Sent: Wednesday, May 29, 2002 12:57 PM
>Subject: [Diy_efi] WB free air calibration
>
>
> > Hi all,
> >
> > After replacing some blown out parts, I got my diy-WB sensor working 
>last
> > night.  Thanks to all the REAL contributors to the project.
> >
> > My free air reading is something like 3.91V.  I was wondering, does this
> > mean all of my readings will be offset by 0.09 volts?  I was thinking
>about
> > adding a trim pot to the calibration resistor and adjusting Vout to be 
>the
> > 4.0V free air value.  Any reason why this would be a bad idea?
> >
> > thank again,
> > Rob
> >
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