According to your pics, it is not running MAF.
You don't have an air intake tube at all. This is where the Mass Air Flow sensor is located.
Just trying to help you understand your engine. Don't take it the wrong way.
As mentioned, if you want to run MAF, you'll need a new ECM, you said yourself that your ECM is speed density (MAP which stands for Manifold Absolute Pressure) and maybe a new harness.