So quick update.

Freeway driving over the holidays, maybe averaged 75 mph for a full tank and averaged 36 mpg. This seems about where my mileage was at before the last time I made this drive.

Either the drop was due to driving style or the ECU adjusted after a few tank refills. Of course I know next to nothing about how all that works so who knows. :iono:

I had it set to 3.500 hundred for the first like 7k miles. Nonetheless I don't ever go over 4k when driving normally I do accelerate a lot tho and drive very spirited haha.

Did a 1200 mile drive and average 31 mpg at 80-85 mph

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I have the same drop in and a catless front pipe and mine stayed the same ~28.6-29.3mpg per tank on the screen consistently.