Another post, another update. Recently just changed the ECM, Immobilizer, and Distributor from a 2002 GT 5Spd. Mainly this was a necessity to do this rather than an optional upgrade as the original ECM is dumping fuel with fuel trims maxed out. Drivability wise, she’s definitely got more power thanks to correct fuel trims.
I was able to reprogram the immobilizer with new keys as my original would not synchronize with the new immobilizer. 2002+ and some 2001s have an “N” stamped on the key whereas 2000 and some 2001s are stamped with an “R.”
I changed the distributor to get rid of the Cam and Crankshaft codes, I was familiar with 2002 having different distributor part numbers already so not too big a deal.
The last bit about this particular swap was the P0183 - Fuel Temperature Circuit A high. Nothing I can do for the time being until I get the Mitsubishi adapter for the tactrix cable and delete the code. I would rather not touch the harness to add the resistor, as the condition of the harness from the remains of the Ripp Mods piggyback is not the greatest.
I know I wrote a lot but this is a culmination of research I’ve gathered to prepare for this swap without having the possibility of deleting the immobilizer, or flashing a 2001 rom to get rid of codes.
I took some pictures in case anyone is curious about part numbers and such. Note the “R” and “N” on the last picture for the different chips for the transponder.