One thing I also noticed about your parts list. You say the car has been converted to mass air. That’s good. However, your parts list says you replaced the MAP sensor.
Now, a MAP sensor would be an essential component on a speed density setup like normally would be on an 88 car and has a vacuum line connected to it along with some wires. A mass air car does not use a MAP. instead, it uses a BAP. The MAP and BAP look almost identical and would be mounted in the same location from factory. In the speed density cars, the MAP measures manifold pressure/vacuum. In a mass air car, the BAP measures atmospheric pressure. A BAP would have wires connected to it, but it would not have a vacuum line.
So, does this component you have listed as the MAP have a vacuum line connected to it? Because in a mass air Foxbody, it should not.
I’m thinking maybe there’s a mismatch of system components
Now, a MAP sensor would be an essential component on a speed density setup like normally would be on an 88 car and has a vacuum line connected to it along with some wires. A mass air car does not use a MAP. instead, it uses a BAP. The MAP and BAP look almost identical and would be mounted in the same location from factory. In the speed density cars, the MAP measures manifold pressure/vacuum. In a mass air car, the BAP measures atmospheric pressure. A BAP would have wires connected to it, but it would not have a vacuum line.
So, does this component you have listed as the MAP have a vacuum line connected to it? Because in a mass air Foxbody, it should not.
I’m thinking maybe there’s a mismatch of system components