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Just measure the shaft area and take that off the total area of the throttle body for the actual area at WOT.

I export out the data using the scanner, and then splice it together and analyse it using Excel.

lately, I have been using the MPVI hardware to do the scan capture so I can take USB out of the...

I don't see any need to over complicate this whole topic.

Stock Value * New Area / Stock Area = New Value

Using your estimate for the shaft size of 10mm:
5636 * 7151.3 / 5462 = 7379 for a 2009...

I don't know if it is any type of best practice, but I multiplied all the tables by 0.5 and get what I consider just the right amount of burst KR with no added real knock retard.

I first had to change the modes so the switch points were where I wanted them, as the cam made the first few stock modes never hit.

I show my current modes and switch points in the attachment.
...

Changing the switch points also keeps the fuel smell down when ideling since I am running no cats.

Changing the switchpoints helped me get my wideband to agree with my narrow bands. It always ran best when in open loop after wide band AFR tuning, because once I put it back in closed loop, the O2s...

For example if you want 12.6:1 then set the PE table to 14.68/12.6 = 1.165. Your table seems to jump around, so I would guess you were compensating for lean or rich scans in the PE table when you...

Set the PE table to the AFR you want at WOT. If your commanded AFR does not turn out to be your actual AFR, do not change the PE table, but rather change the SD or MAF tables based on where the...

Engine->Idle->Idle Airflow->Base Running Airflow->Airflow Final Minimum
Engine->Idle->Idle Airflow->Base Running Airflow->Baro Mult
Engine->Idle->Idle Airflow->Base Running Airflow->ECT Mult

If you have a newer car, then most likely you have Virtual VE. It is not too difficult to tune. I have a spreadsheet I use that does all the calculations for me. It also takes into account...

It can be disabled at "Entine->Spark Control->Spark Retard->Knock Retard Attack-Enable RPM" and "Disable RPM", but I would never do it. KR is one of the best measurements other than a dyno or track...

For lean cruise, I first adjusted "Engine->Fuel Control->OL&CL->General->Mode vs. Airflow" to better fit the engine modifications and get all the modes used again. Then after being 100% confident...

Sorry. I use version 2.23 because I also regularly tune a C6.

It also happens with 2.22. In fact, with 2.22, it is even worse, and I think I have never been able to scan more than 2 minutes before getting disconnected. It makes it very hard to tune the...

Here it is.

I think I have this issue solved. I have done over 300 miles of scanning, and attached is now the worst amount of timing drops I ever see. Compare it to the image I posted at post #24, and you will...

Looking at that scan, it shows a safe 12.6 AFR throughout the WOT run, and only 20 degrees of timing. That is really suprising to see KR under those conditions.

So I have done some more scans and have some more detail behind a growing theory.

When throttle input becomes low enough to match the idle TPS while trying to maintain a speed in gear, there is...

This is from my 2009 C6 so adjust acordingly. It should be very similar on a 2003:

Engine->Torque Management->General->Maximum Torque->RPM vs Gear = Max all cells to 6042
Engine->Torque...

I have the same probelm on my Duramax. I tried both 2.22 final version and 2.23 beta with the same results. The same laptop scans my C6 without any problem, but on the Duramax it won't go 5 minutes...

I don't know. My only guess would be similar to how LTFT turn off for DFCO or PE. Perhaps Torque Management also disables during DFCO.

Perhaps you are seeing the issue up to 2000rpm because you...

Yes it did, but I had to do more than just lower the Enable RPM. I noticed that due to the large cam (242 duration), and the AFM changes made earlier, that I needed to increase both TPS tables, and...

And on a non-related note. I wish I would have turned off Torque Management along time ago. This is a real tire destroyer now. All this time, I did not know what I was missisng. Feels like I did...

I was out of town for the weekend, but did some more testing on this today. I need some more scans to be certain, but the last couple scans I have done seem to show that this rapid drop in timing...