do you think stock A/F are ok with increased boost running methanol?
this would avoid to alter the O2 signal.
Only increase boost, increase a bit the HPFP pressure and inject methanol
It could be so simple as that?
BTW: you are used to carb engines, how do you determine if the engine runs on right A/F without an O2 sensor? I am trying this on my oldtimer fiat 127 running big carbs