I’ve read that having the mass air sensor that I have with a 70mm housing can give you incorrect readings because the stock housing was 55mm. And a fix to this is to run the FTVF-12b579-A2A sensor. Have you ever heard this?
*2.) MAF & sensor interchange
The 94-95 Mustang 5.0 MAF & sensor is also found on:
1995-94 Mustang 3.8L F2VF-12B579-A2A,
1994-92 Crown Victoria 4.6L F2VF-12B579-A2A,
1995-94 Mustang, Mustang Cobra 5.0L F2VF-12B579-A2A,
1994-92 Town Car 4.6L F2VF-12B579-A2A,
1994-92 Grand Marquis 4.6L F2VF-12B579-A2A,
Evidently the –A1A, -A2A, AA, etc. on the end of the part number is a minor variant that did not change the operating specs. You should be able to ignore it and have everything work good.
Charcoal canister needs to be installed, the fuel system is a closed system by design. Also no cats are known for stinking exhaust but the dark plugs tell a story too. Swap in some fresh plugs, nothing special just regular copper plugs work very well.
from the pics and the list I posted you have what appears to be a stock maf and sensor.
To add to the above post, placing the filter on the end of the maf may effect the airflow through it causing erratic readings. Best thing to do is replace it with a stock air box or ad a pipe that puts the filter inside the fender cavity.
I tried pulling the codes while the engine was running but never got any readings, not even a code 11, I’ll try it again. The MAP sensor is already left open to atmosphere. I do have a new intake ordered to move the filter to the inner fender well.
Also my coolant temp takes forever to warm up and I have a hard time keeping the temp in the normal operating temp range. I assume my fuel issue is related to this because the car is always thinking it running cold. I’ve installed a 190 degree thermostat and it has a 2” aluminum radiator with an electric fan that comes on at 215F. The ECT sensor and the temperature sensor for the gauge are both new.