Gruppe M intake vs. replacement filters on sound difference

[stylinexpat]

Originally Posted by PencilGeek

Did you look in the DynoDB?
http://bmw.pencilgeek.org/showDyno.html?recID=14

Here's a review with sound samples as well. The dyno results in this thread have been corrected and replaced by the results above. So use the results above as the dyno reference...not the dyno results in this thread.
http://www.m3post.com/forums/showthread.php?t=164396

Thanks for the kind reply. Very minimal gains for the money

[NFDoms2k1]

With our cars $50/rwhp is a good deal!