Backstory: I've been helping a mate with a 4g93 swap into a CE mirage over the past couple months and due to neither of us having a lot of time and hes given up on it. I will be taking it from him if we can get it going soon so that I can drive it to mine before the rego runs out. I have done the swap before as I helped Lachie "Doomslayer" with his swap last year as well as replacing the 4g93 he cooked. The source of the problems we have run into has revolved around both cars having there engine looms molested by previous owners. On top of that the 4g93 is a slightly older model 4g93 than the 2 4g93s I worked on in Lachies car. Meaning that the looms are slightly different between the my mates lancer and mirage. I had to splice in some wire to use the front loom from the mirage on the lancer for the starter motor to be wired up correctly. The point we are stuck at is that the immobilizer is not happy (have a engine light) and we aren't getting injection or the fuel pump to turn on. The car turns over and we are getting spark, can get it to run with start ya bastard (sounds rough as hell coming out of the headers). So far what we have done since fixing the problems causing the car to not even turn on, then not turn over is: We have left the key in the on position for an hour with both immobilizers but neither removed the engine light. Powered the fuel pump directly and it works and pumps fuel. Still car wont start. What we are worried about is that the loom in the donor lancer was very molested around the interior fuse box with all sorts of wires spliced in seemingly to connect a "shock sensor" and a siren which was in the engine bay. We had the thought that potentially the car was stolen and that the molesting was a work around the immobilizer. Our next plan is to grab the ecu, immobilizer, key reader and key from Lachies car and see if that will start the car. Question is whether his ecu will start out 4g93 considering the slight differences in his 4g93 and ours.