Exhaust !!

[MB PERF]

It looks like a simple vacuum line going to the one tip pull it off, plug it and you should be good to go. Might be a light on on the dash, let us know if you do it.

MB

[mrbmwx5]

Went to my local BMW's dealer to check out the new ///M X5/ ///M X6 and took it for the spin...

I disconnected the rubber hose (around the muffler tip) from the solenoid and attached a small screw to the hose to prevent anything going in there.

My impressions:
1-The car feels more responsive, I took it to a back road and stepped on it. For some reason (maybe my imagination, the tach needle moves a bit quicker and reaches 3 digits faster)
2-The interior sound has barely increased, almost unnoticible. But the sound on the outside (driving with the window down) is a bit deaper.
3- I noticed the MPG dropped a little when cruising but when I engage the Cruise Control the MPG went back to normal.

Maybe is psycological or maybe there is a better flow and sound. I don't know. One thing for sure now I like it and if the MPG drops too much or anything else happens, I just plug the hose back into the solenoid.

[wmc]

Are there any video comparisons between the stock exhaust with open valve vs. closed valve?