Auto VE questions

[SSpdDmon]

Wow, thanks for taking the time to do that...
Couple things I am going to have to modify in your reply though.
1) No more EGR...took it off
Basically converted my 00 to 02...software and hardware-wise. Only thing I need to double check is Transmission differences.
With what you replied I realized some stuff...Thanks much for the assistance. I am sure I will have more questions later on, but I definitely have a better idea now.

Mike

Well, to get the full list of changes, load in a stock file in the background for comparison and run the compare report. I changed quite a bit. As for the EGR, that should be simple. Just hit the Disable button and kill the DTC Processing Enablers for it.

[ViciousKnid]

So all I really need to do then is take the RAFPN avg for each temp and add it to B4307?
So for the Screenshot below, I add 2.23 to the 111F section in B4307 for P/N.
Will that also help my cold start AFR? cuz it's way lean and I haven't been able to richen it up.

[SSpdDmon]

So all I really need to do then is take the RAFPN avg for each temp and add it to B4307?
So for the Screenshot below, I add 2.23 to the 111F section in B4307 for P/N.
Will that also help my cold start AFR? cuz it's way lean and I haven't been able to richen it up.

(Sorry for the late response)

Correct - 2.23 is what you would add to your desired airflow table.

No, this shouldn't affect cold start AFRs. This is purely making sure the engine has enough airflow to maintain idle. For cold start AFRs, you can command a richer AFR in B3605 for ECT temps where you're lean. Ideally, once you tune the AFR @ operating temps appropriately, cold start AFRs shouldn't be that far off.

Are you sure you're not reading lean because of the AIR pump???

[ViciousKnid]

(Sorry for the late response)

Correct - 2.23 is what you would add to your desired airflow table.

No, this shouldn't affect cold start AFRs. This is purely making sure the engine has enough airflow to maintain idle. For cold start AFRs, you can command a richer AFR in B3605 for ECT temps where you're lean. Ideally, once you tune the AFR @ operating temps appropriately, cold start AFRs shouldn't be that far off.

Are you sure you're not reading lean because of the AIR pump???

I figured it out. The cold start lean problem was actually because my VE way down low got screwed up some how. Fixed it and all it good. Working on an unrelated issues now.

[joecar]

...

I like to work on one cell at a time (only takes 5 minutes). So for the 176*F cell for example, I go back to my log and filter out any ECT's less than 175*F or ECT's greater than 177*F. Then, I look at the AVERAGE log of the RAFIG pid for 176*F. I then make that correction to the 176*F cell in the desired idle airflow table. Do that for all of the temps in the table you were able to hit. Then, guess-timate for the cells you weren't able to hit. That's the best you'll be able to do for them.

...

So you work on one cell at a time...

filter out data not for this cell, take average of remaining data, add it to this cell... I see.

[Dirktdolman]

Sorry for digging up an old thread but every direction I turn I am referred back to this thread.

I tried running the RAFIG and it did not work. So I looked into the PID and can't seem to find the PIDs the RAFIG is referring to.

[joecar]

In V8 those two pids are named IAC_LD_M and IAC_SD_M.

Did you select the engine controller as LS1B...?

[Dirktdolman]

In V8 those two pids are named IAC_LD_M and IAC_SD_M.

OK I found those but the MORE INFO for RAFIG refers to IAC_LTD_DMA and IAC_STD_DMA. Don't I have to have IAC_LTD_DMA and IAC_STD_DMA for RAFIG to work?

I am trying to set this up for both a 03 2500 HD 6.0L and a 01 S10 ZR2 4.3L. Am i going to have to create two separate set of PID loads?

Did you select the engine controller as LS1B...?

I did

[joecar]

OK I found those but the MORE INFO for RAFIG refers to IAC_LTD_DMA and IAC_STD_DMA. Don't I have to have IAC_LTD_DMA and IAC_STD_DMA for RAFIG to work?

With the V7 scantool: yes.

With the V8 scantool they are renamed (the More Info text is not correct).

[joecar]

If you're attempting to tune idle/rafig, then you should be doing this with the V7 scantool.