well guys basically I have a stale CEL. I'm running a JRSC with Hondata s200 and p28 ecu and the car is an EM1.

Prior to the stale CEL I had a true CEL which was a code 43 (fuel supply), so I replaced my o2 sensor and reset the battery. Now the CEL is on but there is no code, and the CEL is only on after I start the car (it is not on when the key is on the number 2 position).

When I short the service connector with the key on the number 2 position, the CEL turns on, but does not flash, and turns off again once I remove the paperclip from the service connector.

I've heard that it can be a bad ECU. Should I swap it with my stock P2T real quick? I'm running 440cc injectors. If I swap ECU's (P2T or any stock OBD1 ECU), will the motor run pig rich because the ECU is not calibrated to operate with 440cc injectors?

I opened up my ECU and it looks like new. The Hondata shows a solid red light when I took it all apart, so I think that is still good.

Any ideas or suggestions?

 

the CEL will show up, and not throw a code, if your gas cap is not screwed on all the way or if it doesn't seal all the way. try that.