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Author Topic: Audi A6 C5 v8 4.2L 40v (4D0907558R) - O2 and SAI delete  (Read 308 times)
Dropout
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« on: September 23, 2019, 08:57:58 AM »

Hi, I've started to work on O2 and SAI delete for the car in the subject but I need some help with the O2 delete. The SAI delete is working , flashed and tested on the car. I'm attaching the original file and the maps I've defined.

Here is what I've found/defined as maps -

Defined correctly :
   ESKONF - 10B9C
   MSLBAS - 183B3
   MSLUB - 1A596
   CDWKONLS - 181BA

Maps that need checking/correction :
  CDHSH
  CDHSHE
  CDKAT - definitely wrong
  CDLASH
  CDLATV - definitely wrong
  CDLSH
  CDLSHV

Also if anyone knows and wants to explain how exactly are these flags found and identified as they are offset in the different ecu version. Is the file dissassembled or is there a lookup table with the offsets (always willing to learn Smiley ).

Thanks
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bamofo
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« Reply #1 on: September 25, 2019, 08:06:58 AM »

do the rear 02's have that much influence? I just put spacers in mine and it worked fine. I can help find those tables, just wondered why the interest?
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Dropout
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« Reply #2 on: September 27, 2019, 12:38:50 AM »

Reason is that the car in question came with removed cats and rear O2 sensors and the engine check comes on after a reflash with the original file as someone had tried to delete/remove them via the file but had done a poor job (in my opinion) as the whole part with the flags was set to 0 and no errors were reported. Saturday/Sunday I'll look at the file again, I've done this on a couple of friends cars but they were 1.8t and with a bit of offsetting the "flags" lineup, which is not the case with this file.
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bamofo
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« Reply #3 on: September 27, 2019, 07:31:49 AM »

is that ORI the stock file or the edited one? If you have the 100% stock one ill confirm with my file.
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Dropout
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« Reply #4 on: September 27, 2019, 02:16:19 PM »

That is the 100% stock file.
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