INSTALLING CATLESS DOWNPIPES ON MY F07 550I GT!! (CRAZY LOUD)

Today I installed my downpipes for f07 bmw, THE SOUND WAS CRAZY!!
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[@c.h.2503]

Yes the smoke is "normal" the N63 engine is known for burning oil. Leaking it. Cracked right in the V. Just plastic parts and tubes. You also need new valve stem seals. They're a bitch to do...