[Diy_efi] wide band O2's

[gary]

MessageTo clarify, not for 'checking' (for accuracy) specifically.  The free 
air reference is for CALIBRATION only, it will not necessarily be 
a determination of accuracy in the range utilized.  The calibration 
at 'free air' WILL grant you accuracy at that point (free air).  It will 
NOT guarantee accuracy at AFRs that are generally monitored 
(11.5-13.5).  That is the responsibility of the circuitry of the sensor 
controller.  THAT is what separates a good controller from a paper 
weight.   

GAS

  ----- Original Message ----- 
  From: gary 
  To: diy_efi at diy-efi.org 
  Sent: Wednesday, July 06, 2005 7:30 AM
  Subject: Re: [Diy_efi] wide band O2's


  > There's always an easy way to check....
  Yes, the 'free air' reference from another post. 

  Brian, with sensor 'drift' a normal characteristic of WB sensors,
  (especially in performance environments), I question the solution 
  to the problem, when free air test shows sensor drift, and analog 
  circuitry unable to provide for manual (re)calibration.   

  Gary

    ----- Original Message ----- 
    From: Brian McMahan 
    To: diy_efi at diy-efi.org 
    Sent: Wednesday, July 06, 2005 7:10 AM
    Subject: RE: [Diy_efi] wide band O2's


    You have a point. There's always an easy way to check though just take 

    it out and let it sit then check what AFR it's reading.

     

    B


----------------------------------------------------------------------------

    From: diy_efi-bounces at diy-efi.org [mailto:diy_efi-bounces at diy-efi.org] On Behalf Of gary
    Sent: Tuesday, July 05, 2005 10:26 PM
    To: diy_efi at diy-efi.org
    Subject: Re: [Diy_efi] wide band O2's

     

    BTW, I was referring to digital processing, not necessarily the 

    display.  Another thing regarding the PLX; there is no 'in use' 

    manual calibrating.  It is my understanding, it relies strictly on 

    the sensor's calibration resistor.  Again, I question the accuracy, 

    especially after it has been in use for some (hours) time.    
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