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'10 335i MT

5/14/2024 at 76,455 got the following codes with no symptoms:
002CF7. Digital Motor Electronics (DME), throttle valve potentiometer 2, plausibility to air mass
002CF6. Digital Motor Electronics (DME), throttle valve potentiometer 1, plausibility to air mass

Reset codes and in a day or two same codes would return.
on 4/11/23 at 75,640 had valves walnut blasted. So I figured maybe the shop didn't connect the electrical connector on the throttle body. I took it all off and cleaned the throttle body to be sure.

Got SEL light yesterday. Today, driving on highway at light throttle, cruising at 60 in 6th gear, felt a slight surge every 0/5 seconds, with no movement of throttle pedal.

Came home and pulled codes 10/24/24 at 76,560 miles:
002CF7 Digital Motor Electronics (DME), throttle valve potentiometer 2, plausibility to air mass
002CF6 Digital Motor Electronics (DME), throttle valve potentiometer 1, plausibility to air mass
002D2E Digital Motor Electronics (DME), throttle valve angle, intake manifold vacuum, correlation
0029E0 Digital Motor Electronics (DME), mixture control
0029E1 Digital Motor Electronics (DME), mixture control 2

Symptoms are similar to this post

Car is bone stock with BMW performance package

Replace throttle body?

Thanks all