Hey has any one installed the jet performance modular on their truck yet. I am looking at one for my 1992 5.0 its speed density. I was just seeing if anyone has used this or could possibly give me more info.I have done a lot of research on it. Just trying to make sure that i didn't miss anything. I know that speed density runs of pre programmed air to fuel rations stored in the computer. If you add mods to it the computer cant compensate for them so you will have to do the mass air conversion. Its supposed to connect between the computer and the main wiring harness.

 

Search for posts by PKRWUD. He has one and thinks quite highly of it