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      08-12-2012, 09:53 AM   #4
TripleBlack
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Drives: 2007 BMW E93 335i
Join Date: Jun 2012
Location: London

Posts: 326
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no, but I'm hoping some one comes along as tells you/us. The only way I'm going to find out next is when I take it in for a service.

There are occasions if you leave it to idle you will hear a distinctive knock which only goes if you play with the accelerator.
I hate pulling up at the lights and being next to a car that has an engine banging away like that now my one is doing it.
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