EGOR

[Richard Wakeling]

Hi Bruce,

    When you were testing your WB prototype, where did you have the sensor
placed?  Was it at the end of the tail pipe? When you are in closed loop was it
able to display the typical rich/lean oscillations?   The reason I ask is about
a week ago I had the opportunity to have a look at one of the Aussie WB so
called professional Uego meters. Cost about $3500 inc GST. The guy I spoke to
was telling me how accurate their tool was and said that it sampled 21 times per
second.
    What puzzles me is he was very happy to point out that at 14.7:1  (closed
loop) his display would show a nice straight line meaning for him his tool was
displaying the correct result. I would of thought that if they had gone to the
trouble of sampling 21 times per second we should see some oscillation during
closed loop. He could not explain to me a satisfactory reason and I am still
puzzled. One explanation was that because he had the sensor at the tail pipe any
oscillations would be lost. Does this mean that his tool is not capable of
detecting quick lean transitions that normally would be displayed on our factory
O2?
    Question to all you people who use, own WB meters. What do you see during
closed loop mode at the tail pipe?

Cheers Richard.



Bruce Plecan wrote:

> Got one right here.
> One of the prototype, first 3.
> Ran it in parrarel, with a NTK WB and was at least as good.
> The Bare unit is very fast responding.  Using a scope actually gave the best
> results for steady state viewing.   I'm using a slow sample rate DVM for in
> car work.   Was easy to see the individual cyl firings at 3K rpm..   It also
> was real close to the commanded AFR the ecm was seeking, in my GN (under
> boost even <g>).
>
> There is an update (to the wiring), and continuning work on it.   Thou at
> this time, just limited to 2 people.
> No boards yet.
> As I recall, paying premium prices for all the bits was $35.
>
> > Has any one built this wide band EGOR unit and has any feedback to how
> well
> > it works?
> > What do you estimate the total cost of parts would be to build it?
> > Did you build all in house or did you send out some of it to be
> fabricated:
> > the board, etching, etc.
> > Thanks.
> > Steve
>
> ----------------------------------------------------------------------------
> To unsubscribe from diy_efi, send "unsubscribe diy_efi" (without the quotes)
> in the body of a message (not the subject) to majordomo at lists.diy-efi.org

----------------------------------------------------------------------------
To unsubscribe from diy_efi, send "unsubscribe diy_efi" (without the quotes)
in the body of a message (not the subject) to majordomo at lists.diy-efi.org