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      06-01-2011, 07:49 AM   #5
Mike@N54Tuning.com
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Drives: 2007 335i, 2015 M3
Join Date: Dec 2008
Location: N54tuning.com

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I would do tune first, then DPs..

For DPs ar design is considered the best, and the new AA pipes have been shown to be popular as well. There is a GB on the AA pipes right now

Mike