I actually figured out the B4403 and B4307 correlation last week, I was hoping to get things nailed down a little more solidly before posting my results. I found posts #46-#48 in the thread below and that helped me understand why adjusting B4403 with a stock throttle body makes sense. I have cracked open my throttle body more than stock since adding the camshaft to get my IAC count in the 50-60 range at idle, but had not adjusted B4403. I shifted it 5 cells (it looks like you shifted it 3 cells in your tune) and so far my DYNAIR and IACDES_B have been extremely close at idle and operating temperature.

Here's that thread I mentioned above: https://forum.efilive.com/showthread...l=1#post193144

So my B4403 and B4307 are in a very good spot based on my logs. I went ahead and ran through your version of my tune, Statesman. I think I understand everything you did, but correct me if I'm wrong.

1. Modified CL mode so it is in a lower CL mode at lower airflow. Likely to smooth out the transition from low to high airflow/CL mode.
2. Slowed down the rate at which STFT are adjusted, and made them adjust less aggressively at lower engine airflow values.
3. Gave my ECU more room to adjust the airflow correction.

My only question would be with B4401. I haven't seen anyone adjust this before, and my steps are normally well below 200 let alone 310. Although now that I write that, looking at my RAFIG log from yesterday (attached below), my car starts up with just over 200 steps. In that log around from 12,000 I stopped at a store for a minute before finishing my drive home. Restart had IAC steps at 136, nothing crazy.

Anyway, I have attached my tune incorporating your modifications (although I kept my B4307 and B4403), as well as a CALC.VET log and a RAFIG log. Please note that the RAFIG log is my drive home from work, go to frame 19,000 for some steady state, operating temperature idling. The CALC.VET log looks alright to me, although it's showing about a 5% discrepancy in my MAF table. I'm not sure if this is due to the much colder temperature (40s versus 90s from previous logs, Fahrenheit), or if things are all of a sudden that far off. I did an oil change this last weekend, but I doubt that is affecting my tune.

My RAFIG values seem to be much more realistic, bucking while driving has decreased drastically, and the engine at cold startup seems to run much more smoothly. I did notice some bucking while pulling away from a stop when I let out the clutch, I'll need to do a proper RAFIG log and update my B5001/B0101 tables.

Tune: Garrett_GTO_tuned_20181013_2.ctz
CALC.VET Log: GTO Oct 15 2018 home to IBC.efi
RAFIG Log (driving): GTO Oct 15 2018 IBC to home RAFIG.efi