I have a 1991 B350 but the fuel filter is from a 1992, which makes me question if I have 1992 fuel system that could change things for me.
Like I see MPFI but Ido not see anything that looks like an MPFI system.

My question is a TBI ever called an MPFI ? How do I know the difference for sure?

 

TBI(Throttle Body Injection) has 2 fuel injectors up in the throat of the air horn. MPFI(Multi Port Fuel Injection) has a fuel injector at every cylinder.

 

That is what I thought... I therefore do not have a crankshaft Sensor, but do have the hall effect.