Hooked up a 98(or a 97, can't remember)auto ECU I got from Neal in my 96 I30t 5-speed. I am sending mine into JWT for the upgrade.
So the check engine light comes on, which I figured might happen. Pull the codes and get eight different ones. Which does not include the two my stock ECU was giving me a few days ago.

0803-Absloute pressure sensor
0801-Vacuum cut balve bypass valve
0402-Fuel temp sensor
0903-Evap canister control valve
0807-" "valve circuit
1008-" "purge valve
1302-Map baro SW solenoid/valve
1003-Park neutral switch

I know some are because it's an auto ECU and some because I don't have the EVAP system. What about the 0801,0402,1302,0803??? why were those given??
Some feedback would be helpful.

BTW, the car runs fine with the ECU, just threw codes.