engine swap - runs, but not good-HELP!

[fiveohpatrol]

If you are wanting to use the speed density computer, you are going to need to run a vacuum line to the MAP sensor. This is Manifold Air Pressure, and is how speed density operates. Without the vacuum line, the computer has no idea of how much air is getting to the engine. The reason your 93 didnt have a vacuum line is because its not a MAP sensor, I believe it is called a BAP (barometric air pressure??). It relies on the MAF to read the mass of the incoming air, and therefore doesnt need the vacuum line. Speed density is a good thing until you start going with large cams that don't produce enough vacuum at idle and therefore send screwy signals to the ECU.

short version: run a vacuum line from the MAP sensor to the intake, and then see what happens