WB O2 Success

[Steve.Flanagan at VerizonWireless.com]

Mark,

Have you done any data comparison with the WBO2 and your Horiba.  Would be
curious how this great kit brought forward by the hard work of several
DIYers compares to the likes of a Horiba.

Steve  



-----Original Message-----
From: Mark S. Riley [mailto:turbotuneusltd at triad.rr.com]
Sent: Tuesday, December 11, 2001 12:58 PM
To: diy_efi at diy-efi.org
Subject: Re: WB O2 Success


I've got a Horiba and it takes 33 seconds from switch on. Ask me how I know.
I added 10 ohms to R4 and the DIY-WB warms up in about 35 seconds. Just a
couple more than the Horiba and much quicker on a re-crank than the Horiba
which again takes 33 seconds. Ask me how I know. I've had the Horiba for
twelve years. later, Mark

Of course you can add some more resistor and fire it up quicker. I
understand the sound of the porcelin cracking is not an extremely expensive
sound.

----- Original Message -----
From: "Kevin _" <kiggly at hotmail.com>
To: <diy_efi at diy-efi.org>
Sent: Monday, December 10, 2001 11:33 PM
Subject: Re: WB O2 Success


>
> I don't know exactly how the DIY-WB board's circuitry is set up to heat
the
> sensor, but I do know you should be able to heat it a bunch quicker than
> that.  The production NTK driver box heats the sensor in about 5 seconds
and
> the Horriba driver box heats the sensor in less than 10 seconds.  I can't
> confirm that you can just drop down the resistance to accomplish this
> properly and safely though.
>
> Kevin
>
> >There should be some 15 ohm resistors left over from the parts
> >kit. Add some of these time across R4 (the big 1 ohm), until the
> >sensor warms up between 45 and 60 seconds. (That is in
> >parallel with R4).
> >
> >BobR.
> >
> >
> > >
> > > Question:  It takes exactly four minutes for the sensor to heat up and
> >the
> > > LED to light.   Is four minutes heating time typical?  This is a bit
too
> > > long for my liking.  I assume that there is a need to control the rate
> >of
> > > heating the sensor or else we wouldn't have the elaborate heater power
> > > supply.   I would like to shorten the heating time if possible.  Any
> > > comments on what the effect of shortening the heating time would be?
> > >
> > > Thanks,
> > > Neil
> > >
> > >
>
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