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I am running a $6E modified ARAP bin and am not quite happy with all the little tweaks necessary to get it to run right on the iron headed 86 305 that I have.
I already did the long crank fix, copied over the spark tables and maf tables, and some other tweaks.
Comparing the BINs, I noticed that the $32 XDF is a little on the skimpy side, so I decided to take a look at the Hac.
The main problem I am having with the ARAP is getting it to idle correctly and smoothly. Comparing to the other $6E iron headed BINs has had varied results. I would just like to tinker with the settings to see if I can get results from a non roller setup. My 87 roller seems to be more tolerant of the ARAP settings.
I would like to add the Warm IAC Park Steps vs Coolant Temp Table to the XDF but I am a little foggy on how to do it. I have added a constant before but not sure about doing a whole table.
Am I seeing (FCB) values or just place holders here for the actual IAC steps?
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Am I seeing (FCB) values or just place holders here for the actual IAC steps?
The FCBs just indicate that these are single byte values (8 bit)
The value following the FCB is thae actual value (be careful because some hacs are in decimal, hex or Steps) These are in IAC Steps
I've added the actual address to the lines so you can see how it goes in sequence from the starting point of the table.
The table values actually start at C691 (the "L" represents Line number in the code)
To start,
Open your XDF
Under XDF menu, Create new item
Select Table
Enter the name you wish to call the item
Enter the starting address of the table "0691"
Output type should be Integer because these values will be whole numbers only.
Go to the "Rows" Tab
Since there are 9 rows indicated by temperatures, put 9 in the box
Unit will be "Deg C"
Row Lable type should be floating point (If you wish to make data tracing work)
Enter the Row values starting with the first one in the table (-40, -16..etc until done)
Go to the "Columns" tab
There is only 1 column since this is a 2D table.
Units will be in "steps" because this is an IAC function
Column lable will be Integer (again so the tracing can work)
Go to the "Conversion Tab (although nothing will be changed here because the values are already in "Steps" of IAC movement.
Last but not least you can click the ALDL Association tab and set the data to come from the Coolant temp when Data Tracing is enabled.
You are a life saver man. I did it wrong at first, I put the address thats in the hac and I got wrong values. Then I was looking through the $6E hac and I noticed that the actual starting address is the first line of the data 0691
Then I pulled the values correctly.
The stuff you posted about FCB's went over my head, I do not know how to tell the difference, but maybe if I find that source code for dummies all that will be in there?
Anyhow, I did notice that the $32 Park Steps are very different from ARAP:
I copied over this to my arap bin and noticed that the off idle transitions and transitions from steady state were more responsive and smoother for my 86.
The stuff you posted about FCB's went over my head, I do not know how to tell the difference, but maybe if I find that source code for dummies all that will be in there?
The "FCB" is just what the disassembler indicates as a size.
Some use .byte or another designation.
In this case, The FCB = 8 bits, You would specify that in the item definition( 1st pic)
If this was FDB, (meaning double) that would be a 16 bit value and would need to set it that way to display properly.
There is a value at the starting address of most tables that defines how many lines there are. That's why you need to go to the first "Data" point address after that.
3D tables can have 3 values defining the table parameters so you would need to go that many addresses farther to get the the actual data to display correctly.
Aw, come on, That's an easy one
Do the same thing as above but use 37F for the starting point address.
I believe this table is already indicating full fuel during crank. Seeing how the values are already at the maximum of 255 (that is the max value for an 8 bit number), you could only lower the amount of fuel with this table.
This one will require a conversion factor. it would be 1/255 = 0.003922 (the box should read X * 0.003922)
I run SD $8D, not the MAF so I can't comment on the table except the 145 would only happen at -16 C to -40 C
(That's pretty cold even for Cleveland)
In $8D on my car having a few more steps helps to freewheel and is quicker when starting. If I keep them low it seems to be harder to crank.
Last edited by JP86SS; 03-07-2009 at 02:43 PM.
Reason: Forgot to add the conversion value
