ha ha shit my tongue is not english to im a continental boy :)
rrfpr = rising rate feul presure regulater
megasquirt if you can get it to work then go for that , it has soo many options to tune things and self tune but flipping hard to set up i have 1 but still neads soldering etc etc and lots more research needed before i ever go there
if there are no tuners then get a pfc fcon with bigger injectors that can be self tuned to a degree with a wideband afr gauge