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      10-11-2012, 07:05 AM   #3
EJ_3's Avatar

Drives: e92 335i, e34 525i & e60 530i
Join Date: Aug 2011
Location: N Las Vegas

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2007 BMW 335i  [4.17]
1994 BMW 525i  [5.00]
2007 BMW 530i  [4.33]
Originally Posted by jordan313 View Post
they do the same thing. but its the quality and fitment that sets them apart.
+1, another thing that set them apart is the diameter. Most kits offer either 2.5 or 3in. The extra half inch helps flow a little bit more air of course. Regardless, both are better than stock so it's really a preference thing.

There's also ceramic coating and thermal coating options which I believe the same.

There are also a few on the market that offer a flex pipe. I can't talk too much on this because honestly I stop following dp after I installed mines.

OP, just do a search and you'll find plenty of 'which dp is the best' or 'what do you think about this set of dp' to get a better idea or understanding of what you're looking for. Hope this help and good luck.