<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
<HTML>
<HEAD>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii">
<META NAME="Generator" CONTENT="MS Exchange Server version 5.5.2652.35">
<TITLE> DIY-WB defined</TITLE>
</HEAD>
<BODY>
<P><FONT SIZE=2>Rob,</FONT>
<BR><FONT SIZE=2> 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.)</FONT></P>
<P><FONT SIZE=2>Why:</FONT>
<BR><FONT SIZE=2>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.</FONT></P>
<P><FONT SIZE=2>So:</FONT>
<BR><FONT SIZE=2>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.)</FONT></P>
<P><FONT SIZE=2>Thus:</FONT>
<BR><FONT SIZE=2>The DIY project allows individuals to buy a PCB, a parts kit, and an inexpensive (couple hundred est.) factory wideband sensor for input. </FONT></P>
<P><FONT SIZE=2>Conclusion:</FONT>
<BR><FONT SIZE=2>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). </FONT></P>
<P><FONT SIZE=2>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.</FONT></P>
<P><FONT SIZE=2>Hope this helps,</FONT>
<BR><FONT SIZE=2>-Christian</FONT>
</P>
<BR>
<P><FONT SIZE=2>-----Original Message-----</FONT>
<BR><FONT SIZE=2>From: Rob MacMorran [<A HREF="mailto:rmacmorran@yahoo.com">mailto:rmacmorran@yahoo.com</A>] </FONT>
<BR><FONT SIZE=2>Sent: Friday, August 24, 2001 2:44 PM</FONT>
<BR><FONT SIZE=2>To: gmecm@diy-efi.org</FONT>
<BR><FONT SIZE=2>Subject: Re: DIY-WB Parts Kit update</FONT>
</P>
<BR>
<P><FONT SIZE=2>Can someone re-explain the purpose/use of this kit for</FONT>
<BR><FONT SIZE=2>new list members like myself?</FONT>
<BR><FONT SIZE=2>BTW, hello, I am just a guy in St. Louis, MO who has</FONT>
<BR><FONT SIZE=2>too many hobbies and too little time. I joined this</FONT>
<BR><FONT SIZE=2>list because I have a general interest in fuel</FONT>
<BR><FONT SIZE=2>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</FONT></P>
<P><FONT SIZE=2>well.)</FONT>
<BR><FONT SIZE=2>I plan to use the car as a test bed for some fuel</FONT>
<BR><FONT SIZE=2>economy experiments including hydrogen boost and water injection...</FONT>
</P>
</BODY>
</HTML>