Fuel pressure

[manefresh]

My 91 coupe has a Check Engine Light flashing its a p12 and p41 showing my car is run'n lean.I have some mods typhoon upper and lower intake,70mm Professional products throttle body,bbk cold air intake and off road h-pipe.I was told I need to adjust the fuel pressure cuz of the mods,if I buy one how do I adjust it and how high do I set it?

 

[KamiKaziDK]

Get a gauge when you get the afpr, you can't do it without one really. Generally stock is around 33-35 I think.....I would bump that up to 38-40 to start out at and go from there. Someone correct me if I'm wrong about those numbers

 

[liljoe07]

40psi with vacuum line off, engine running.

Still, only a lean code in one bank. Doubt its a fuel pressure issue. As that normally would affect both banks. I think the AFPR are a waste of money, unless you are boosted. Thats just me. But the gauge is cool to have.

Id look for faulty wiring to the 02 or just a bad 02 sensor.