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      10-02-2012, 11:16 PM   #12
deltalima0
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Drives: 335i
Join Date: Sep 2010
Location: Atlanta GA

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Quote:
Originally Posted by drewmeyer87 View Post
Siren noise you are hearing is coming from the fact that your DPs are touching the sub-frame... they need to be adjusted and bolted down properly. Not having that middle bracket isn't helping either.

Make sure your DPs are installed correctly and the siren noise will go away.

If you can't get them to adjust the DPs properly, or they just won't budge, buy a 2 5" adjustable clamps, throw them around the DPs near the flanges that connect to the exhaust and tighten them down a bit to get the pipes away from the sub-frame.
Thank you very helpful, and makes good sense.
Appreciate 0