Here is a long shot... did you reset the codes after replacing all that? Also, I use an App on my Android called Torque. I am able to watch and LOG all the data from my engine. It will monitor the long term and short term fuel trim on both banks and all sensors. It will also measure the O2 volts as well. I'm still learning how to read all the data but it will post it online or you can export to Excel.

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'03 Black BMW E53 3.0i 110,000+ miles
'03 Black Mercedes-Benz W211 125,000+ miles
'13 White Mercedes-Benz W2o4 New