ZRoE XzisTeNcE

So I swapped a euro r h22a into my 2000 prelude(previous engine spun a bearing). Anyways, the car starts up and runs but it's missfiring. I'm not sure why. It would run fine at first but the cel light would flash when i would drive it but would stop when i was at a stop light/sign.

I'm running the usdm h22 fuel rail. starter, and wire harness. I'm using the euro r fuel injectors and distributor. I dunno if this affects anything but i pulled one of the wires from the icm in the h22 dist and put it in the euro r dist so my tach would work. but when the lude missfires the tach would start going crazy

Initially i was running the usdm h22 ecu. I just got an ecu from phearable.net and it still missfires. If anything it seemed like it ran worse. I'm assuming i would have to use an obd1 distributor and fuel injectors with that ecu?

spark plug wires are about 1.5 years old.
spark plugs are only 2-4months old.

Any help/advice/recommendations would be much appreciated.