Fuel Issues????????

[fufanu180]

My S14 SR20DET has ran crappy ever since the swap. For some reason it wouldn't want to go into boost and every time it saw boost the motor would just fall on its face.

Tonight I was messing with the DataScan and I decided to turn the air fuel all the way up. The car idled smoother and it drove like it should. My wideband was at least giving me a reading at idle...still lean(17's), and when I drove around the block it would read mildly lean(14's).

Now obviously this isn't where I want to be but I'm at least moving in the right direction. What would cause the ECU to be stingy with fuel? I have a Walbro 255, and temporarily swapped it out with a Z32 just to be sure it wasn't the fuel pump, and also have an AEM FPR(thinking the stock fpr was bad).

Bad O2?

:wtf:

[fufanu180]

I just thought of something. When doing the swap I installed a greedy turbo elbow. The way the o2 mounts doesn't look to be ideal. It's barely in the exhaust stream. Would this make a difference? I thought about it when installing the elbow but figured it was fine.

CenTex240