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.