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      06-30-2010, 10:28 AM   #161
tom @ eas
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Drives: BMW
Join Date: Nov 2005
Location: Anaheim, CA

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2015 BMW M4  [2.75]
Quote:
Originally Posted by Cadence View Post
I am very interested in buying two of your filters.

-Do you have any before and after dynos (same car, same day)?
-People report a change in induction sound after installation. Why?
-What country is the filter manufactured in?

Thank you
Here is a review/dyno from a forum member upgrading to the Macht Schnell filter: http://www.m3post.com/forums/showthread.php?t=271780

All filters are manufactured in the US. The change in sound is largely related to omitting the integrated charcoal liner in the stock filter, which is restrictive to ariflow.
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