So even more of an update. The previously codes remain. I have ordered ac delco knock sensors and I will check the intake for warpage and possible leaks when I replace the sensors. What I found really interesting was this; as I checked the fuel injector wires with the noid light, I came to injector 5. If you remember, I mentioned hearing a ticking noise on the drivers side of the engine. I checked injector 5 and as i removed the actual plug from the injector, the ticking noise stopped. Once the injector was reconnected, the noise started again. The noid light did function on 5. My guess is either an injector that's not working at all or dumping fuel. I'm guessing the latter. Any input is appreciated.