I'm new at this so I would like to verify my process with someone.
Please see if one or more of you can check over my procedure.
89 camaro 350 TPI 165, APYN 6E with a few minor mods.

I want to add injection for small pulse widths. It's not in my xdf file.

I created the list item.
I addressed the first byte at 03C3 per the arap hac from Moates.

There will be two columns in my new list item.
Under the row tab I created the first column whose entries won't change. It's labeled PW usec.
The entries for it are straight from the ARAP hac.

There is a conversion tab that I had questions on in a previous post. It asks for an equation. After many hours I figured out this equation is needed by Tuner Pro to compute a result byte that will be uploaded to the bin. In my case this equation came out to 15.229629*x+0.000000. I got the constant by dividing the usec(microseconds I think) by the result in the hac. 15.22962 is an average.
The results are not linear so an average is the best I've got.

The first row from the hac is a follows TBL Value =18, PW =488, usec added =276.

I then had to insert the correct usec added in the second column and save.
I did this directly from the hac. This is the one I will be able to adjust while tuning.

My concern here is why before I did this last step did Tuner Pro populate the usec added column with a bunch of HUGE numbers?

If one of you have already created a list item, did I do this correctly?

Hope my questions are clear.

I'm relatively pleased but I've never tried this before so I'm stepping into strange waters, let me know please.

GW

 

I'm sorry is my question to vague? My only real concern is that equation. If someone out there understands this I sure would appreciate the input.

 

The only part that I don't understand is this one. I followed up you until this. Everything else that you wrote sounds correct.

It's strange, though - the ARAP bin that I have doesn't match my ARAP hac values, nor does my APYP bin match my APYP hac. Weird.

 

Ah, actually, I see now that the sentence that didn't make sense is because you're saying what I was saying - the bin you're looking at really does have huge values for this table initially. You put in the values you expected to see based on the hac.

Unfortunately, because every 6E bin that I see has large values in this table as it is defined, I'm suspicious of the hac. It doesn't look like a real table.

So that brings me to my next question - why do you want to add this table?

 

You are very close on the equation. The multiplier is 1 / 65535, which is 15.26 usec's per count.

So a value of 18 (the first table entry at 3C6), is 18 * 15.26 = 275 usec's. Which gets added to the injector PW.

RBob.

 

My BLMs go to 145 -150 when I turn on the AC other wise they stay at 128 at idle. If I move a cell or two in MAF table 1 a bit richer my BLMs go to 123 124 then I turn my air on and the number goes to about 136 to 140. So I was thinking that this PW adds to my base pulse width when I turn on my air. I was going to try and move it some to see what happens. Can I lesson the difference is my aim.
That's my reasoning. It's really great to have you guys step in and help.
GW
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Mangus, You got it that is what I did exactly. For my reasons why please see above.
thanks

RBob thank you for checking that equation. Can I ask a dumb question? How did you come up with your equation? I'm sorry I'm sure it will make sense once you explain it.
GW

 

See what the PW is with the A/C on. Then add a little to the table at that PW entry. Most likely the airflow increased a little, so should the PW. Well, at least this is the idea behind this particular tweak.

It may also be that the vehicle voltage has dropped with the A/C coming on. If that is the case then tweaking the BatV PW compensation table can help.

The equation: the ECMs internal counters are clocked at 64KHz. The inverse of that is the time period between counts.

RBob.