First off I want to go ahead and apologize if the answers to my problems have already been dealt with in other threads. However my situation is a whole host of things and I figured I would lump everything in together and hopefully get some useful help without wasting many hours or money on something that isn't causing the problems.

CEL is on so I ran the codes and here they are.

-P0300
-P0301
-P0302
-P0303
-P1127 Bank 1 mix adaptation: too rich
-P0420 Catalyst system bank 1: efficiency below threshold
-P0328 knock sensor 1 circuit bank 1 G61 high
-Speed sensor rear left G46

The vehicle now has 206k miles on it.

I have recently (within the last two weeks) replaced all my coils, plugs, air filter and all four fuel injectors. When I first bought the car at 198k miles, I replaced the fuel filter. After doing so I cleared the codes and ran it a couple days, however everything you see above came back. For a while now, in the mornings when I try to start the car it doesn't kick over the first time. But on the second try, every time, it'll turn over. Once the car has been running for a bit, killing the engine and then turning it back on is no problem. As of right now after its been running a minute you can start to feel the missing of the engine. It's not very violent but still noticeable. A very light pulsing in the idle. The vehicle also hesitates a bit when I put the pedal to the floor. It rattles a bit then revs up, but you can feel a loss of power as well. On top of all this, I don't hear my turbo anymore.

This is just a short summary. Again I apologize but I just wanted to start this thread and hope to get some help. This is my only car and if this thing goes down, I'm pretty much screwed for work as I drive a lot.

Any help would be greatly appreciated!!!

 

You posted this two weeks ago, so I hope you've already resolved it.

From the description, it sounds like a too-lean condition, despite the P1127 code. I'd check for air leaks, broken check valves or hoses, splits in rubber ducts, etc. Also, the coolant temps sensor, or MAF sensor, might be malfunctioning. You might try disconnecting those sensors so the ECU runs on default values, and see if the running improves.