Many thanks to jim, nice response

[mark kibort <mkibort@xxxxxxxxxxxxxx>]

Message text written by Jim Conforti
>u mention that the O2 sensor would be fighting with the increased fuel
> pressures.   But, isnt that ONLY at the part throttle condition.  ?????=
?

  No it isn't.. that's a popular misconception..

  While the O2 sensor is only active under conditions that could be calle=
d
  "part load" under load X and rpm Y.. the mixture adaptation numbers tha=
t
  are formulated from the O2 sensor WHEN it's active (generally a low spe=
ed
  additive and a mid speed multaplicative correction) are used EVEN under=

  WOT conditions!

  Open loop only means that FEEDBACK is not occuring right now.

>>>>>>>(I'll use caps so you can see my feed back , im not yelling)   =

WELL,IF FEED BACK ISNT OCCURING RIGHT NOW, ISNT THAT OPEN LOOP?  I ALSO D=
ID
TWO DYNO RUNS WITH THE O2 SENSOR DISCONNECTED AND THE PLOTS WERE THE SAME=
. =

  I HAVE HEARD OF YOUR DISCRIPTION THE 02 SENSOR IS ALWAYS BEING USED, BU=
T
MY TESTS SHOW OTEHR WISE.    SO, IF THE FEEB BACK IS NOT  OCCURING, AND  =
I
UP THE FUEL PRESSURE , WONT THE DURATION OF INJECTORS JUST FOLLOW THE
PROGRAMING OF THE DME ?  WONT THE MIXTURE RICHEN UP , LIKE I SAW VERY
OBVIOUSLY FROM MY TORQUE, HP AND HOBIRA  air fuel measuring equip on the
dyno. =


  It does NOT mean that the correction factors are now ignored..

> So, you say it is USLESS, is this what you really mean?    Let me know =
if
> the bosch books are wrong about the o2 sensor under almost full and ful=
l
> throttle conditions, as my tests seem to indicate that the O2 sensor is=

> ignored when the system goes open loop.

  Not WRONG.. they just omit the most important aspects of it.. they are
  not stupid, Mark.. they don't RELEASE information on how the DME really=

  works.. <

i>>>>>>>>>>>>I  UNDERSTAND ABOUT THE SECRETS OF THE afm.    .    BUT I AM=

COURIOUS ABOUT YOUR STATEMENT RECARDING THE O2 SENSOR BEING INGNORED BUT
CORRECTION FACTORS ARE .   HOW???


>>>>>>>>>>>>>Thanks for your reply, I think this is a grey area for many =
of
us with the old AFMs

Mark kibort

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