Sounds like they messed up your timing in the shop. I'm doing timing guides on m119 right now. Mechanic opened my timing chain cover and while he was putting new chain in there he skiped 2 teeth on crankshaft. Thank god I noticed it and said to him that I will do timing myself and will put cover back on myself. It is very easy to skip at least 1 tooth on crankshaft gear. Check your timing.
One more example of if you want to have something done right-do it yourself.
Good luck.

PS. That is some crazy video you got there posted. Car is fast.

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1999 ML430 Silver 135k ml
Smoked LED taillights, Alpine in-dash DVD player, 12" sub, Pioneer components, 2 amps, 4200k HIDs, ML55 headlights, 20" rims, mirror LED blinkers

SOLD. 1996 E320 145k ml. Burgundy

SOLD but miss it everyday 1992 500sel Black
Chime buzzer mod,Alpine CD/MP3 player with stock amp,Euro headlights,S600 grill,20" rims, BEST CAR EVER!

SOLD. 1990 300E White
187k ml,smoked tails,Euro headlights,17rims,Intake,12" sub in first aid kit,alarm/autostart,buzzer mod