ok i drive a 91 integra with an obd2 swap and obd1 conversion the car was running good sat but at about 125 it would cut out for about 5 sec then come back and now 2 days ago it just cut off completely theres no spark or fuel pressure i tried 3 diff main relay one was rebuilt and i tried a diff ecu still the same please help i have no transportation to work thank you

 

Im thinking bad ECU ground on thermostat housing, bad ignition switch. ALL Bad main relays. Do these test and click to the right if you get a NO
Honda Acura Starting Problems Repair Guide, Main Relay Locations