i got a 96 mitsubishi rvr with 4g63 motor, and i picked up two evo computers.
They plug strait in and 1 Just turns over and the other Trys To fire, iv also tryd runing evo air flow meter but doesnt help.
What do i need to do to run a evo computer??

 

what exactly are you doing. Taking the stock harness off the ecu and plugging it into the evo one?

 

each car has different needs that the ecu does, For example the 97-99 dodge neon r/t shares the 420a motor with the 95-99 eclipse. Many aftermarket companys make "chips" for the neon but only one does for the eclipse(97's only). Even though their the same motors their are slight differences that wont let the ecu's work.

 

yep , just unplugging the 3 plugs that go into starndard ecu and pluggin them into the evo 1

 

why would u switch ecus?

 

I am not sure it will run properly if at all...but i dont know