ULTM8Z

So how does this table work?

I did a search but it wasn't clear to me from reading...

JP86SS had posted an excel file back in '07, but the link appears to be broken...

http://www.wideopenwest.com/~Johnand..._TABLES_8D.xls

RBob

iTrader: (1)

The value is subtracted from the three O2 window threshold tables. The fast R/L, then the lower and the upper slow O2 tables.

RBob.

ULTM8Z

RBob thanks. The value of the entries in the table are in "counts". Does that imply that one count is equal to 1 mV?

RBob

iTrader: (1)

It uses the same conversion equation as the three O2 window tables.

RBob.

ULTM8Z

RBob, thanks very much for the prompt replies!!

JP86SS

iTrader: (1)

My ISP decided to remove my site for some unknown reason.
The spreadsheet is included in the S_AUJP V4 package if you would like to play with it.
Gives a good visual reference to the three table values (+coolant table) and the window setting also.

ULTM8Z

Thanks, I'll take a look!

ULTM8Z

I'm trying to find these again and am running into a brick wall...

Anyone have this conversion equation to convert the counts to O2 mV?

RBob

iTrader: (1)

ADC = O2 VOLTS * 226

O2 mV = ADC * 4.42

RBob.

ULTM8Z

Thanks!!

So 1 count is equal to 4.42 mV.

RBob

iTrader: (1)

Yes, the two equations are just the inverse of each other. Only one being in volts and the other in milli-volts. I just quickly pulled them from the hac.

RBob.

JP86SS

iTrader: (1)

I NEED TO FIX THAT !!!
The Coolant modifier I have is configured to use mV (not "counts")
Each of the 3 columns formulas must change to be:
L84AB "Lower" first cell: from =C11-K11 to =C11-(K11*4.42)

Do the same for L84B4 "MEAN", and L84A2 UPPER columns.




I'll post up a new and improved version.

ULTM8Z

JP, thanks!

The three tables I"m showing on ANHT are

1.) Fast O2 R/L threshold vs MAP

2.) Upper zero error reference for slow O2 vs MAP

3.) Lower zero error reference for slow O2 vs MAP

Are these the same as the ones you're referencing?

Also, what do "fast" and "slow" mean here?

JP86SS

iTrader: (1)

From memory...
Fast was read from the input with very little or no filter applied.
Slow was filtered to smooth out the reaction.
Each is used differently but I don't recall exactly which one does what.

I set that sheet up by following RBob's white paper.
The good explanation is in there. Need to refresh...

ULTM8Z

RBob, are these counts the same as the MAT compensation counts? Such that it offsets the O2 voltage the same way and the same equations apply there as well?

RBob

iTrader: (1)

The table at $84F6, yes, same equation. However, that table is based on CTS not MAT.

RBob.

ULTM8Z

Ah, so the table is mislabled?

RBob

iTrader: (1)

I take it the ECU/XDF has it as a MAT table? The ANHT .pdf hac has it listed as coolant, which is about the earliest source for $8D.

RBob.

ULTM8Z

It's labeled MAT in $8D in tunercat and I believe tunerpro as well.