Thread: SR20DE S-AFC Issue

i got a nissan P11 sr20de, with t25 turbo and z32 maf. the car is running great on idle and low throttle, but when i push to WOT, the car goes to 22 AFR. the high setting of the AFC is in 50%+ on all RPM points. the car has 550cc nismo injectors, and wallbro 255 pump. if anybody has this problem or had please give some pointers. also the fuel pressure on the rail is 5 bar on idle (this is for testing purpose)

what have i done allready.

tried different setting of the hotwire settings. 2-5 5-9 2-4 etc
adding fuel pressure with the regulator
spark plugs on 0.60 gap
boost on 0.6 bar
change spark plugs.
test the injectors for leaks


please help me out here
could be that the AFC is bad? only the high settings?

get a chipped ecu and toss the safc.... its 2012 sir

yeah thats about right lol

injectors are too big for afc to correct

how much boost are you running, and damn! 22 is lean as fuck. id stop driving untill you figure it out. is you maf goood? are you getting good fuel pressure to the injectors? is the apexi wired correct?