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      01-03-2013, 02:39 PM   #12
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Drives: 2011 535xi M Sport
Join Date: Oct 2010
Location: Sharbot Lake, Ontario

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Originally Posted by 2005x View Post
I believe you can get the 550 Diffuser(which has a bigger opening)and you won't need to cut anything(all depending of course on the size of the tips you get). anything over 4" would look ridiculous on a stock 5 series. Also you can get the m5 diffuser but then you will need to modify the mufflers and possibly move them back as the tips will stick out to much. Do keep in mind the length of the tips, as most aftermarket tips are way longer than factory.
From what I remember the diffuser only works with msport bumpers. So if the OP has msport he is good to go otherwise I think you need to cut or change the bumper. Someone please correct ot verify my statement.
2011 535i xDrive, Dark Graphite Metallic, Veneto Beige Dakota Leather, Technology Package, M Sport Package, Executive Package delivered Christmas Eve '10, Mods - quad tips, 20% tint, JB4.