I've had my PFC a while and it always idled rich. I went into the inj Maps and leaned it out but after it warms up it always gives a .99 o2 read out and I backed it up with a wide band at 10:1 (rich as it would read). Is there a way to lean it out? Fuel related Mods follow PFC,850ccx4, walbro pump.

 

ok, first make sure that your pfc is set to 850cc injectors all the way around. then instead of changing ur inj maps go under PIM and just pull out about 5-10% of fuel at 1000 rpm and u should be fine. i personally wouldnt mess with the maps themselves. good luck