shawn's maxima

Well this code keeps comin back. P0174. I've searched all over and all I see people saying is replace the Maf. What I wanna know is can it also be my o2 sensors on bank one. I have a full exhaust..headers/ypipe/no cat. Wanna know if there's a way to check each separately. Cuz I don't wanna blow a heap of money on a maf and the same thing comes back..
02, 70xxx miles CAI,headers,ypipe,no cat,2.5" exhaust. Jwt flywheel clutch, techno square ecu

nsnrider

iTrader: (59)

heres my trend of thought.

assuming you have a 5,5 gen... (you didn't mention year of car but said maf is expansive and the 2000-2001 maf is cheap so i'm guessing you have a vq35)

p0174 is a too lean condition on bank 2. the good news is bank 2 is by the radiators.

i would look into air leaks especially at bank 2. intake leak, pcv hose leak, etc.
i would look into swapping the primary o2 sensor at bank 2
try to swap maf with another one to test. ( did you try maf cleaner?)

fsm says to check injectors, exhaust leaks, fuel level and fuel pressure.

how many miles on the car?

what other work has been done?

rebelhell

iTrader: (1)

Here's what the FSM has to say about it.

El_PrOfE

iTrader: (4)

I hate to grave dig but I did a search and this was relevant, I looked at the possible causes, and I have a new intake, new exhaust, and new maf. For the Oxygen sensor are there more other than the ones on the exhaust? If so whats the location? And is there a diagram for it?