DIY-WB defined

[Bob Valentine]

You might try starting here:

http://www.diy-efi.org/diy_efi/projects/diy_wb/

There's also a lot in the archives.

-> Bob Valentine
-> bob at tecmark.com

At 02:17 PM 8/24/2001 -0700, you wrote:
>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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