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      06-28-2012, 03:47 PM   #7
mkPOTO
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Drives: BMW M3 | X5 xdrive 35i MSport
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Quote:
Originally Posted by chris s View Post
I've been debating putting on a challenge sport pipe to go with my AE Axle back. I've been nervous to mess with it b/c i'm very sensitive to drone. The AE pretty much has none with stock midpipes.

How would you say it changed the sound? Drone? etc?

thanks!
It changed alot actually, more rumble. Because it removed the secondary cats it sound a little different. You get more of a rumble at higher rpms, and very stock under 3k. Drone is very minimal but alittle bit louder than stock. I would highly recommend someone looking for more rumble. I am looking to remove the primary because I would like it to be a consent rumble (f that makes sense) I will try to post a video soon
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