I'm sure it is, the light never comes on instantly usually takes a few miles and I no longer have the scanner for the night.
I got the headers used, they are slp's with high flow cats and the fins were bent some in the cat, could that or leaks cause any of this?
But when I pull the plug you can see its not getting fuel. It has no discoloration at all, still looks new, I know the injector is working tho. And I put I timing light on the wire and it's getting spark.