stanglx2002

so you have an 88 MAF version mustang right

RnJs50LX88

Correct!

stanglx2002

you need to trace that wire that is in the top port and see where it goes You said that the car wont run right without it hooked up

RnJs50LX88

NO no Another EEC unit was used for a Day in the car and there wasnt the same power as when this EEC was in there

stanglx2002

what other computer was used. Was it a A9L

RnJs50LX88

i called the guy I bought the car from he said 3 or 4 different computers where used but this one worked the best! Thats all he knows

stanglx2002

well he can try all the computers he wants but if he doesnt use a mass air computer it wouldnt run right.

A9L=Manual mass air
A9P=Auto mass air
A3M=cobra mass air

RnJs50LX88

Well all that said it still doesn't let me know what this thing is attached to the top. I have driven the car now with it and without it. If its not my imagination it feals like with it on the car had better low end power but with it off it feal like you can run away faster at highway speeds

black88

what you have is an older pms unit. part of it is missing and you probably would never be able to find the rest of it. Here is a link to the company that made it maybe they will be more help if you cantact them. http://www.efisystems.com Read the about section it tells a little about it in there. Hope this helps

roadrunner

What is the difference between these two?