There are so many damn variables when trying to calculate MPG's so for me, any perceived benefit is just a possible bonus nothing else.
Trip length, terrain, weather, altitude, loaded weight, fuel type, quality, octane (labeled vs actual pumped in), bad mood, construction, red lights, yellow lights, toll booths, LEO's, naggy wife, astral sign, I mean damn I'd just drive myself nuts trying to account for the multitude of variables.
One of my trip monitors has not been reset since I bought the car. Prior to ACES (4Kish miles) I was at a miserly 14 MPG (LOL!) Over the last couple of fill ups with the ACES, I am up to 14.7, WOOHOO! Does that mean I'm getting better mileage? Maybe? Maybe the motor is breaking in? Maybe I've just been a kinder, gentler FoMoCoSHO.....doubtful, LOL!
I'd suspect it will just take some time for ACES to clean up 100K of crap...Having to burn years of deposits is bound to affect FE in a negative way.
For now I would just drive it and try to figure out some way to get a somewhat consistent testing methodology maybe using a specific piece of road, consistent pump, and the built in mileage tool if that vehicle has them. The problem now is the "genie is out of the bottle" so to speak.
If you've been tracking religiously I'm sure some possibly better data will begin to emerge over time. I'd say driving in your normal sphere of influence will yield better data anyway.
Good luck, keep us updated, and try not to drive yourself batshit crazy figuring it out, LOL!
Edit-When I averaged your tank ending MPGs
12.65 Pre ACES
14.64 After ACES
Disclosure- My mental faculties have not 100% returned so my math could be off.
I added the pre aces ending MPG's totals and divided by 5
Did the same for post ACES and divided by 4 (threw out the 0 ending tank)