DIY-WB Output Voltage Scaling

[Bruce]

The WB is meant to be a tuning aid.

Then you think about it, there is no real need to make this a closed loop
system.
A vast majority of your time is figuring out what AFR your engine likes
best.  Burning a chip or reflashing a pcm isn't what I'd call back breaking
or major time consuming work.
By the time you let the temps stabilize, write your notes, check a plug or
two, it amounts to no big deal to burn a prom.
You also have to remember closed loop at WOT is just fuel.  If there is a
big temp difference that causes a fueling change, well, better hope you have
the timing corrrection right for the new MAT.

A much larger and immediate concern would be getting a full time baro/MAT,
timing and or fuel correction.

Tuned correctly, you shouldn't need closed loop for anything.  Running a WB
should be just to make sure that things are right.
Bruce

From: "rr" <RRauscher at nni.com>
Subject: Re: DIY-WB Output Voltage Scaling
> I've had a lot of people ask about having the WB control the AFR under
> WOT. Just scares the dickens outa' me. Anything goes wrong with the
> sensor or electronics and the pistons find a new home in the oil pan.
> That and of course then need to run the WB all of the time. . .
> BobR.


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