DIY WB update

[John Lamb]

Ok Bruce,
I have lurked here long enough to know that you are pretty sharp guy.
I also have lived long enough to know that no one has all the answers.
So why are you coming off as being such wise ass here?
Is it because I ask you to reset yor clock so your email doesn't keep
going to the bottom of everyone's Inbox?

I know we (hope we) are talking GM ECM's ;^).
That is why I was talking tuning optimum for open loop.
Using the WB as monitor.
I obiviously know that you can't hook straight in to the the ECM/PCM.
So what ya say we get off to a new start?
Regards,
JL

Bruce wrote:
> 
> 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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