Mass Air/speed Density

[brronc]

I'm putting fuel injection on my 1970 Bronco. I've given up on finding a donor Mustang. I read that in 1990-1993 T-Bird, Crown Vic, and Mark VII that there are some Mass Air controlled vehicles. How do I tell the difference between the Mass Air vs. Speed Density?

 

[BLADE262US]

Hello Look at the air intake filter box follow the tube coming out of it to the intake somewhere along that there will be an aluminum peice in the intake tube with wires coming out of it I think theres 3 . That is the mass air sensor . If it doesnt have one of those then it is a speed density system . /emoticons/[email protected] 2x" width="20" height="20" />