Dropped $220 on it...


So after driving for the day and some adjustments back to 50% duty cycle (initial start was out of compensation adjustment -- Had to richen up for it to even begin reading), the car STARTS much faster and returns to the idle much quicker than before, but I am still plagued by the O2 sensors reading of rich (.81v - .88v)
Could we be looking at leaking fuel injectors? The mixture obviously believes that everything is fine.

Power is about the same at the bottom end, feels a little less at the top end.

Ideas from here?

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2016 Monsoon Gray Audi Allroad - 21k
2008 Black Mercedes E350 4Matic Sport - 131k
2014 Jeep Wranger Unlimited Sahara - 62k
2003 Gray Mercedes ML350 - 122k