Anyone with Unitronic Stage 2+ running on 91?

[Bartlett]

Sounds great. Yes just add it at the gas station to an empty tank. Throw 10 orc12 gallons on it and then run that tank empty

So, after some more research, I've concluded:

- Can't run Stage 2+ 93 tune on 91 without getting 7-9 degrees of timing pulled
- When I had ~0 degrees timing pulled each time I logged on Stage 2+ 93, coincidentally I had E20 + in my tank
- 7-9 degrees of timing pulled will increase my IATs
- Stage 1 91 tune is about 85% - 90% of the Stage 2+ tune in terms of performance and I see 0-3 degrees pulled on 91
- 2 weeks ago, I added BG 44k prior to a fill-up and ran the tank near empty - I did this twice
- E20 93 octane (12 gal 91, 2.5 gal E98) is still showing 3-4 degrees timing pulled, but it's not that frequent (see logs below)
- Today, I logged for 45 minutes on E20 (same gas above) and saw 1 misfire for 15 seconds during deceleration as well as a few degrees of timing pulled

Attached the 45 min log below:
https://www.mediafire.com/file/aarav..._e98.xlsx/file

I'm confused as to why with my IATs I am seeing timing pulled on E20, and why I am seeing a misfire logged on E20 + after 2 rounds of BG 44k, new coils, and spark plugs less than 8 months old with .028" gap, OEM heat range.