new to dsm's and lost

[mitsubishimanic]

ok i have a 90 tsi awd it ran like shit when i got it but it ran and had no cel. bought a new coil pack, plugs, and wires. and timed it. took it for my second drive ever in it and ecu frys. i took it out and it reeked of fish. well i swapped in a 91 eprom and a 91 pt. swapped pin out 6 and 14. it started right up but is now throwing a cel and trys to die if givin any gas. started looking around and found a few vac lines were unhooked and the wires on cylinder 4 injector plug were broke off. i am lost and dont even know where to start other then im looking into doing a vac delete this weekend to see if that helps and figuring out how to get a new injector plug with some wire on it. any ideas or suggestion would be awesome. i always wanted a dsm now i have one and dont want it to be over before it starts.

 

[Jafro]

Both the coils and the coil harnesses are different as well. IIRC, the speedometers are also different and don't read properly. You might need a '91 gauge cluster... (which I have).

 

[mitsubishimanic]

the walk through on here said i only need to switch my power transistor when swapping to a 91 ecu from a 91. so do i need a new coil

 

[Jafro]

It might just be the plug...

I know I have a '90 coil on my Colt which has a 92.5 wiring harness, and someone told me I needed to swap it out. It could be he just said that because of the plug... but I didn't pry. I have 3 cars parted out on shelves in my garage so to me it wasn't a big enough deal to ask.

 

[MY1GDSM]

It's so much easier when swaping a 91+ ecu into a 90 to jsut Buy this <---- Click
and Use these Instuctions <---- Click

Though I'm not sure what going on with Keydiver right now... . :-|