ecu's ????

[olson3422]

what has to be done when putting a 90 ecu in a 92

[bertrenolds5]

I don't think anything, just make sure it is the right md# for your car, check this v-faq http://www.vfaq.com/mods/ECUs.html

[munchgsx]

Pin 14 Air flow sensor active filter reset (idle switch)
(switch with 6 if using a 91-94 ECU in a 90 or vvs)
Stock wire color - Green

Pin 6 Idle position switch
(switch with 14 if using a 91-94 ECU in a 90 or vvs)
Stock wire color - Green/White

Switch pin 6 with 14 and drive on.

http://www.vfaq.com/index-main.html