Wide band with AutoPROM - Third Generation F-Body Message Boards

Duts87ss · 08-30-2009, 09:25 PM

Anyone have any advice on connecting my Summit wide band to one of the AutoPROM inputs for reading AFR in my datalogs?

I found some info somewhere that told how to add the .adl info, but how does this info jive with the setup procedure for the wideband controller that I've read about doing? I guess what I'm asking is how do I know what formula to use when I'm telling TunerPro how to read my WBO2 signal?

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JP86SS · 08-31-2009, 12:51 PM

If using the add on channels of the AutoProm...
Setup your ADS file as:
16 bit
Figuring you would use the full 0-5 volt range.
use range /1024 = multiplier + base AFR value
ie: If WB is 8 to 20 AFR that would be
12 AFR range / 1024 = 0.01171875 + 8.00 base value

The actual channel numbers can be found in the 6E def that comes with TP. They are in the 68-72 range IIRC.
I'll post the exact channels when I find my note.
There was a switch in the channel numbers that can cause you some trouble because 1-3 were not in order "channel number wise".
Jp

(going by the terminal numbers)
Channel 1 = 67-68
Channel 2 = 65-66
Channel 3 = 69-70

Duts87ss · 08-31-2009, 09:56 PM

I'll have to check what formula I have added already. I found it here somewhere; I think you even replied to that post.

The formula given in the old post was "Multiply ([X*Factor] + Offset)". With Factor = 0.014687 and Offset = 7.35.

JP86SS · 09-01-2009, 12:29 PM

That formula is IF you are using the LC-1 WB at its factory settings.

Use 15.04 AFR span/1024 counts = 0.0146875 +7.35
Gives 0-5 volt range of 7.35 to 22.39:1 AFR

If you are using a WB with a different span of AFR readings you'll need to recalculate as above.
Jp

Duts87ss · 09-01-2009, 07:54 PM

I'm pretty sure that the Summit setup is a relabeled Innovative; even comes with the Innovative software CD.

LA1 Z24 · 09-10-2009, 07:50 PM

Hey sorry to threadjack. But this has some serious relevance to my current issue. I'm running A1 with the WB hack. Input is pin A3. The TPRT AFR reads totally different than what the gauge says. I've done the above equation with 0 success in getting it anywhere close. What does the number 1024 in the equation represent? Perhaps for my setup 1024 is the wrong number to input into the equation to get the factor? I'm running an AEM UEGO, and it has a range from 10-19.98 AFR, and has a 0-5v output. Anyone able to help me? Thanks

JP86SS · 09-10-2009, 11:00 PM

8 bit value = 256 steps (0-255 actually)
(5 volts / 255 = 0.0196 V per count)

10 bit value = 1024
( 5 volts /1024= 0.0049 V per Count)

The 10 bit is only when using the Moates "ad-pac" additional 3 data aquisition channels with the AutoProm.
If you are using your ALDL datastream with a WB hack added to output the data, this would most likely be an 8 bit value.

To figure out the scaling,
Take your Maximum AFR value and subtract the base value (minimum AFR value) to get your "range"
Example: Innovate LC-1 can be set for 0-5 volt output range to indicate 7.35 to 22.39:1 AFR reading range.
22.39 - 7.35 = 15.04 AFR "range"
15.04 range / 255 = 0.05898 AFR per count on the input to the ECM.
Your ADS calculation would be be "X" * 0.5898 + 7.35 offset
(X being the 0-255 counts output in the datastream)

Substitute the values you are using if you run a gauge that needs to display 10-20 AFR range.
Would be 10 range/255 = 0.03922 + 10 offset.
HTH

Duts87ss · 11-04-2009, 06:47 PM

Got the gauge hooked up working and datalogging through the AutoPROM, but get 286.xx in every cell for the wideband field when I export the log file. Any ideas on what may be the issue? I don't see anything that looks out of place in the .ads, but I'm pretty ignorant in that area.