Hi and welcome,
Go search on Legacy Central BBS as they deal more w/the '90-'94.
If you're in the USA yours is still classified as First Generation.
I've used the Evoscan (Mitsubishi/Subaru/OBDII/CAN EvoScan Software) w/a custom cable to access the ECU thru the SSM port (yellow plug under dash).
Last edited by wtdash; 07-01-2016 at 02:23 PM..