Quote:
Originally Posted by ul2mitt
I just had my MPE installed yesterday on my 2013 535i Xdrive. I can confirm that it is louder. Nice baritone burbles and acceleration tone. I'm not sure if I'd classify the cabin noise as drone though since my ears don't hurt and I haven't had to roll down the windows. It is similar to the sound of my Porsche 911 Sport Exhaust. It's just louder and the added noise can get annoying.
The car is definitely not luxury quiet anymore but I didn't expect it be. However, I am going to add some sound dampening material in the trunk next week. We will see how much that helps.
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I used this and it worked well. It was recommended to me by a guy that ran a M5 exhaust on his 535 and the drone was killing him. Plus, it's relatively cheap.
http://www.amazon.com/Noico-Self-adh...ilpage_o02_s00