Brozee

Does this just increase the exhaust tone at all speeds then or what is the benefit here?

MP4.2+6.0

Yes, you are correct, it just increases sound at all speeds. The sound is there in full above certain RPMs and when you floor it, so it just gives more off idle and modest acceleration when the valves would otherwise cut off the bigger outlet on each side.

The "no go" part is it really is arguably a slight performance decreaser, not increaser. On normally aspirated motors, some increased exhaust back pressure typically helps low RPM torque. That is a cost on old world big pipe exhaust systems that of course are sized to reduce back pressure at high flows. But if you valve it like the W12 and a variety of other late model car designs (seen on other Audis now, BMWs, Vettes, and many others), you get a bit more low end torque plus more quiet, but have the freer flow when you get on it.

FWIW, I tried it briefly. Didn't find any magic sound elixir, and so I just put it back the way the factory designed it. At least on the W12, disconnecting it doesn't lead to any warning lights or obvious codes (at least if lines are plugged), so owners can do what they want with it.

somedude_001

You could just unbolt your exhaust

http://www.youtube.com/watch?v=EDYD0...ature=youtu.be

Brozee

Can you drive it like that lol..?

somedude_001

yes. it is obnoxious.... and awesome

volvopentaman

Yes, you can, i've done it. The car sounds like a supersportscar, and you should have seen the faces of a couple bikers, when i shut the car down in traffic lights, and fired it up again. The bikers almost shat their pants.

Tough, flooring the pedal, or otherwise heavy driving is extremely loud, so loud, that you can't talk to the person sitting in the passenger seat.

JohnnyJ A6Q

pull that beast outside and shoot a video of revving and takeoff .... PLEASE...

JohnnyJ A6Q

It's time for electric cutouts....

mishar

Just V8 won't sound as good as W12.

JohnnyJ A6Q

I have W12