Problem could be that you have no knock sensor in your B18 block. vtec ecus except for the 92-95 are programed for a knock sensor reading. when it comes back without this reading it throws error codes. You can do 2 thing to fix this if this is th problem. you can hook up a knock sensor as http://www.c-speedracing.com shows in their ls vtec how to. or you could replace your ecu with the 92-95(this takes many wiring changes, wont plug right in) GOod luck