DIY-WB defined

[Rob MacMorran]

Very cool.  Do you have information on the source for
the sensors?  I'd like to check them out.

- Rob

--- cmillard at crutchfield.com wrote:
> Rob,
>     The purpose of the Do-it-yourself Wideband O2
> sensor is to replicate a
> air to fuel ratio tuning tool that normally is only
> available starting off
> at $1,500(est.)
> 
> Why:
> Most factory fuel injection systems use a NB (Narrow
> Band) O2 sensor, or
> two, or four, which are really only accurate at
> stoich (14.7:1) This is
> useless for WOT (Wide Open Throttle) tuning, since
> we're shooting to tune
> anywhere from 11.0:1 (big blown) - 13.1:1 (NA) at
> this point.
> 
> So:
> A wideband sensor is accurate in a wider spectrum,
> giving us the ability to
> tune the AFR's we need. An interface will be needed
> to report the data (bar
> gauge, digital gauge, voltage output to pcm for
> logging, whatever.)
> 
> Thus:
> The DIY project allows individuals to buy a PCB, a
> parts kit, and an
> inexpensive (couple hundred est.) factory wideband
> sensor for input. 
> 
> Conclusion:
> I've watched this project for a long time and envy
> the wealth of knowledge
> shared in development, I wish I could have
> contributed, but It's way outside
> my field (and caliber). 
> 
> I have faith in the project and my skills, so I'm
> going for it. DIY is the
> way to go when other methods aren't cost effective.
> 
> Hope this helps,
> -Christian
> 
> 
> -----Original Message-----
> From: Rob MacMorran [mailto:rmacmorran at yahoo.com] 
> Sent: Friday, August 24, 2001 2:44 PM
> To: gmecm at diy-efi.org
> Subject: Re: DIY-WB Parts Kit update
> 
> 
> Can someone re-explain the purpose/use of this kit
> for
> new list members like myself?
> BTW, hello, I am just a guy in St. Louis, MO who has
> too many hobbies and too little time.  I joined this
> list because I have a general interest in fuel
> injection systems and improving fuel economy (also
> on supercarbs list (which
> is not just about carbs btw)), but also because I am
> currently sticking a 95
> Corvette LT1 motor+transmission into a 1976 Datsun
> 280z for my weekend fun
> car.  I will need to modify the ecm for various
> things such as VATS and the
> fuel curve (because I will be installing an ATI
> supercharger as
> well.)
> I plan to use the car as a test bed for some fuel
> economy experiments including hydrogen boost and
> water injection...
> 
> 


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