i went to start up my 91 hf w/ b16 today and got a check engine light. i had a problem with my speedo 2 days ago so i figured thats what it was and went on my way. it ran really rapsy, it sounded the way it did before i put on my resonator. when i was 2 block away it back fired so i turned around, drove it home and check the ecu to count the blinks. it didn't blink it was just a constant light. i turned the engine off and turned it right back on and NO CEL and everything runs fine. what the hell was that all about?