memphis280zx

A buddy of mine gave me his old ecu and it didnt change anything. What is the compression supposed to read at? I had trouble finding it and just assumed it was supposed to be at least 100-120.

Hey guys im new to the forum and to working on z cars in general so i have a few questions that might sound stupid to average z enthusiast. i have an 82 280zx turbo that ive had for about 2 years now and ive been doing as much as i can to keep it running. As of right now ive replaced the engine wiring harness, alternator, fuel pump and filter, TPS, ECU, new injectors, new ngk-g spark plugs and wires. I can walk outside and crank my car right up and drive it around the neighborhood just fine, and honestly it runs better now than when i bought it. The problem im having now is once i start it and turn it off it wont start up again. It will turn over but doesnt fire up, its still getting spark and fuel. Being a beginner i assumed this was some sort of electrical issue or sensor somewhere but ive had no luck finding anything. So i did a compression test yesterday and it read 60 psi for the first 2, 65 psi for the middle two, and 70 psi for the last 2. Obviously thats way to low, but my question is can it be possible for the car to run then read that low? What should i look into replacing to fix this? Anyone else have this problem? And the strange part is ive sent it to the two most reputable z shops in Memphis(which isnt saying alot) and they couldnt do anything at all to help me. One said it was a computer issue and the other shop i guess didnt want to mess with it