I’m scratching my head, what’s my next step? It was parked for a couple years after cam bearing 3 spun and then the fuel went bad. I rebuilt the engine, new knock sensors and harness, cleaned K&N air filter, cleaned the MAF sensor, fuel filter (I couldn’t blow air through the replaced one it easily). The two confirmed codes are P0332 and P0327, bank 1 & 2 knock sensors. I had read the oil from a K&N filter can cause a film on the MAF sensor leaning the engine and causing knocks, I assume the filter would have the same effect. I suspect the injectors. I just ran a bottle of HEET and SeaFoam in 5 gallons of gas through it.