So the old girl keeps throwing me curve-balls.

Checked the codes again tonight and on the OBDII:

P2096 - an old friend
P0313 - misfire detected with low fuel (I may have seen this one before)
P1092 - This one is new (Pre-Catalyst Fuel Trim Too Lean Bank 2)

Possible Causes Listed for P1092:
Low fuel pressure
Large vacuum leak on engine
Faulty Mass Air Flow (MAF) sensor
Faulty Ignition
Faulty fuel injector

So here is the weird thing.
Went out this morning to go to work and walked around the back of the truck and the right side exhaust had a fluttering, chuffy sound while the left side was completely normal. I had heard it sound weird like that before but that was prior to rebuilding my VANOS which is now done and running excellent. After making my trip, I got out to listen again and I swear they sounded the same again? Don't know how this is possible but maybe it's ignition related? No clue since it's not giving me any more information than those codes.

Most stuff I see now and hear is leaning towards bank 2 so I am wondering if that cat is getting clogged throwing all of these codes even though I have not thrown a P0420 yet. I will replace the fuel filter and check the fuel pressure as well. Then I need a way to check my cats if that doesn't help.

Ahhhhh bugger..................lol

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2004 BMW X5
3.0L Inline 6 Auto