f22 leaning prob

[PR CB7]

motor f22a1
mods:
generic header
a6 runners
h23 plenum w throttle
a6 cam
CAI
no balace shaft belt
m2s4

the problem is the bitch is leaning up top past 4500 rpm
pulls great but after 4500 rpm afrs jump to 16
d112 tried to add fuel but it wont richen

the car was running perfect on a pt6
today we did a the cam, plenum and adjusted valves
and we got this now, ive yet to try the pt6 back again, but its funny because this hasnt happen to me b4 and it got some of us thinking
thanks

[evil_demon_01]

C'mon man, be a little more clear in what your asking.
What do you want to know?

[PR CB7]

C'mon man, be a little more clear in what your asking.
What do you want to know?

^^^^^ am sorry i hit the post button after the mods

[evil_demon_01]

What oxysensor are you measuring it with, and has it been calibrated.
With all the extra airflow mods (esp cam), have you done anything to compensate the fuel?

[PR CB7]

What oxysensor are you measuring it with, and has it been calibrated.
With all the extra airflow mods (esp cam), have you done anything to compensate the fuel?

we eliminated the O2 and tried to compensate fuel with chrome

[evil_demon_01]

we eliminated the O2 and tried to compensate fuel with chrome

Have you done any mods after the ecu was tuned? What were the afr's reading before now?

[PR CB7]

the car is not tuned we couldnt get it tuned cuz it would lean out after 4500 so it was useless

but b4

pt6
a1 cam
a6 mani
header

now
a6 cam
h23 plenum

leaning

[C91BLX7]

Check your fuel pressure

[evil_demon_01]

the car is not tuned we couldnt get it tuned cuz it would lean out after 4500 so it was useless

but b4

pt6
a1 cam
a6 mani
header

now
a6 cam
h23 plenum

leaning

What did Jose say?
What was the duty% on the stock injectors at the point where it wouldn't richen? Might be worth getting some 310cc injectors.

[jdm92_accorn]

not the injector size im still running my stock injectors and i've got a bigger cam, i would look into the fuel pressure. and a good idea would be to keep the o2 sensor just relocate it to the second bung on the header. there should be one located just before the collector.

[PR CB7]

not the injector size im still running my stock injectors and i've got a bigger cam, i would look into the fuel pressure. and a good idea would be to keep the o2 sensor just relocate it to the second bung on the header. there should be one located just before the collector.

we had the wideband in the second bung

well i put the pt6 back and this time it richen out

its still running the same way that i did with the other ecu but, this time after 4500 afrs went to low 12s, but it felt the same as the other map but different afrs

[PR CB7]

not the injector size im still running my stock injectors and i've got a bigger cam, i would look into the fuel pressure. and a good idea would be to keep the o2 sensor just relocate it to the second bung on the header. there should be one located just before the collector.

one thing ive noticed
i cant adjust idle
car starts roughly, stays at 500rpms

before the plenum swap it idle just fine, now the only way i can get it to 800rpms is taking out the idle screw out completly

[jhondayaaj]

sounds like you got a bad throttle body, if your idle screw is all the way out. carbon build up. as for your lean problems, did you try to retard your timing a degree or two??