Good to see someone try the 'Wiring tune up'... Now your ECU is not going crazy now ... Did you noticed the wires 'going dark' at the plugs under the hood .. See lots of died Mitsu's with all the wires under the hood 'going dark' at the plugs ..Its about the copper wire not liking where they meet the conecters...Over time ...

Mitsu's dont have bad ECU's ..Its the wires to the ECU that kills the ECU...