Those of you with fuel systems, do you have a diagram of how the fuel lines are routed? Are you feeding into the HPFP anf the rails from a Y or something else?
Not 0/0 on the street but I turned down to like 3c 3r to avoid breaking stuff on rough roads. Around 6c 9r worked ok on the track, but tweak as needed,
It doesn't default to the stock tune, but since it can't read the air fuel it defaults to the stoich of pump gas. Which, if on e85 will probably cause engine damage if you run long term.
Are you looking for these supersnake wheels? btw the wheel gap can stay the same or close with a 19 or 20. its all about the tire height not the wheel size.
I had something similar happen to me after a driveshaft install (which made no sense, but I did reroute the o2 sensor when I installed tthe driveshaft loop). All the sensors on that fuse were throwing codes. I think it can happen if there is a short in the wiring on the o2 sensors