I've got a "full bolt-on" 2020 Mustang GT. Full headers with cats, exhaust, Steeda closed air box, ported intake and TB. Dedicated "E85" though the tune is calibrated to the winter blend tested ~71% fuel I could source. The car is super strong and I think I have a shot at a 10sec timeslip. No option car with about 150lbs weight reduction.
I just put my torque/inverse tables and throttle body data back to bone stock. I thought I was improving things where the opposite was clearly the case. The car feels fantastic and the data generally looks good.
I have an air straightener honeycomb to help the "race only" Steeda MAF housing get a clean signal and I do think it is working well. Since going E85 and/or the weather warming up, my STFT (I have LTFT disabled), I do have a few percent negative trims but I'm not worrying about that right yet.
In recent testing, I realized torque management was still pulling significant power on shifts. (in 'D' / tuned to shift character '1'. My base car doesn't have drive modes) I discovered the 33458 'Spark torque reduction' shift modulation where I set to 1 to remove spark retard on shifts. Not only does it still seem to retard spark, it seems to have invoked fuel enleanment control, even after setting 'Shift modulation' to 0 under 44775 Fuel Cut Torque Ratio vs. Requestor.
Tune and log of various part-throttle and WOT driving is attached. I have three questions, if anyone is willing to help.
1. I'm observing more times than seems reasonable that my 'WB EQ Ratio Bank 1' is going way lean (well over 1, sometimes apparently pegged at 1.998884) Almost always it seems related to either the trans shift mod control using enleanment despite my thinking I've removed it's capability, or a decel situation. But even at some other spots it seems to report numbers well above 1. Any ideas?
2. Any direction on how to properly remove ability of Trans Shift Modulation to cut power via both spark and fuel ?
3. WOT fueling: When Fuel Source is solidly in 'Power Demand Enrich', while my tables are no leaner than 0.85, and yet Equivalency Ratio commanded is hovering around 0.90 more often than near the 0.85 in my WOT Lamda tables. Any ideas ?
Thank you.
Dean