So I just bought a 90 GSX. I have had multiple DSM's and this one has me stumped. I bought the car from a friend since he kept dumping money into it. The car has aftermarket turbo ebay 20g, FIC 750cc injectors, walbro 255, aeromotive fp regulator, Innovatie LC-1 and ECMlink V3. I got the car after it got a new headgasket and timing belt done at a local shop and it ran rougher then it did before, "because" they broke the injector clips. So I ordered new and solder them on did not help. I checked spark with a tester, tested good. Pulled the coil pack off and it Ohm was in spec. Pulled injector clips plugged in noid lights and that works. Tried starting while logging and O2 sensor shows change, the car does not have a MAF sensor only a GM 3bar MAP sensor but it does show around 3 to 4 grams of air while cranking. Pulled CAS sensor and put engine on top dead center and it is good. And compression on cold motor is around 110 across the board. Am I missing anything? Attached is my log