DIY WB update

[Bruce]

Gads, I hope no one takes these AFRs, as anything other then your quessings.
there are no universal answers for what's the sweet spot for tuning.

15:1, is basically a take off on the 14.7, nonsense.  They use that for
Emissions, and also they just AVERAGE that.  ie, toggle across that for
keeping the converter lit.  Tuned properly you can run leaner then that at
cruise.  The 12.5-13:1 might keep a N/A engine happy, but I know of lots of
turbo motors that like richer then that.

If you plug the WBs in place of the stock ones, you'll need an interface so
the stock ecm can recognize them.  Please note, this is the Gmecm list, and
we're in general talking about gm applications.
Bruce



From: "John Lamb" <jll at edge.net>
Subject: Re: DIY WB update


> If you want any meaningful comparison data between your stock O2's you
> will need to mount as near as possible to them.
> It would be nice to run a WB as a monitor on each side near stock O2's
> to use for tuning for open loop operation.  Tune with the WB and set
> economy for 15/1 and WOT 12.5-13.  Use the WB's to watch for changes
> over time. If you were interested in this approach, you could just plug
> them in place of your stock ones.


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