92-95 b16a jdm swap 93 civic dx i have it running i used the wiring harness off the d15b7 of course it was right hand :screwy: anywayzzzzz i have too issues..... code is 1 well it only flashes once long flash that is..... correct me if im wrong that is 02 sensor..... maybe that is why ??? its running rich lots of black smoke when i accelerate alittle at idle so not only vtec..... the originale harness has 4wires different colors though i think it was dark when i look at it ,but is there any thing i should beware of........ and as well there is a sensor on the bottom of my transmission(y21) not hooked up :nono: not knowing what it is or what too do with it what pin it go in (p30 ecu )
i have advanced the timing and if any one can give advice please feel free too thanks......:sunglasse

Reset your timing back to normal. Check the wiring of your O2 sensor, if the wiring is correct, then replace it. Find out where that connector at the bottom of the transmission plugs into (there has to be a connector for it somewhere), and hook it up. While you're at it, check/replace your spark plugs while you're at it. All of that should fix your problems. Not to be a d*ck or anything, but if you know there is a problem and there are things that are wrong, please fix them before asking questions like this. I'm sure you can find a service manual to look at or download if you search around, the wiring is the same as with your stock D-series engine.