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So I fixed it. Apparently the previous owner installed a fuel pump in the tank and had no idea what they were doing. The small hose that connects the fuel pump to the unit itself had no clamps on it whatsoever. Which means when it was trying to pump gas to the main pump it was like trying to drink ...

nevrmind. im retarded and checked the return to the tank. lol ... no wonder it wasnt what it was suppose to be. ill check this weekend and see whats going on.

ok so. i just checked the fuel pressure before the regulator and either im tripping or something is seriously wrong. It was 4psi. right before the regulator on the feed line from the pump.

ok so. i just checked the fuel pressure before the regulator and either im tripping or something is seriously wrong. It was 4psi. right before the regulator on the feed line from the pump.

is there a way to test the icu?

Does anyone know the stock fuel pressure for my car? How many psi?

Ok. So I took my afm apart and cleaned all the contacts. It seems as though it's a fuel loss problem. I bypassed the fuel filter thinking it could be clogged up. It ran a little better. Pulled a lot harder in higher rpm but still would hit a brick wall from a dead stop at almost exactly 2000 rpm ...

does anyone know if any other maf wil work with my car? like a m30b35 out of an e28? or a 635?

I have a 1980 528i and i have no idea why but when the car warms up it bogs really really bad under acceleration .. like right around 2k rpms. It almost shuts down it bogs so bad. I was thinking it could be something to do with the afm but im not sure. The previous owner hard wired the in tank pump ...