i just bought a 95 eg coupe with a b18b swap. It throws a check engine light after driving it for about 3 minutes but when i go to jump ecu with wire the check engine light just stays on with no blinks. But once i turn car off light is off again until i drive or another 3 minutes it has a p75 ecu. And car does cut out and bog out when i floor it but i think thats a ignition problem just wonder why it wont throw a code when i jump it. Any suggestions

 

surely ecu aint bad any signs it would do to tell.