New Berk Street
I just installed the street last night. Wow!
On the first start up, I could hear an immediate difference - from outside the car, the sound was much lower and a little louder. Now that I have driven it for over 100 miles, the sound is much richer - no drone, not obnoxiously loud. It sounds fantastic from idle through 3 K. Above 3K, it sounds like business. I had all the same common concerns about volume, drone, fitment, etc. I can say that these are not a concern - and the exhaust has more than lived up to my expectations. Install was about 20 minutes. Don't forget to tie off the hose to the OEM valve, and tuck it away. If you don't tie it off (use a plastic tie), you'll get a whooshing sound on WOT.
I'll post pics tomorrow.
2010 E82 6MT-M Package//PTF Dyno Tune//Alpine Weiss//Carbon Roof//Carbon R Spoiler//Euro Light Switch//Black Grills//Michelin PSS 235 255//Berk Cat Back//Lux v8//ER CP Tial BoV//CDV Delete//Hardwire V1//