Has anyone disconnected the vacuum lines to the mufflers/exhaust to see what sort of sound difference it makes by not having the internal valves rerouting the air flow makes?

A local exhaust company was looking under my car and said they wouldn't change what's there as it seems fairly well designed with the exception of the middle section of the exhaust where the tubing narrows off and enters a resonator?

 

I think this exhaust system sounds very euro. Impressed!

YouTube - 04 Audi B6 S4 Milltek resonated exhaust system with Magnaflow mufflers

YouTube - 04 Audi B6 S4 Milltek resonated exhaust sytem with Magnaflow mufflers from stop light.

YouTube - 04 Audi B6 S4 Milltek resonated exhaust sytem with Magnaflow mufflers Rolling

I am going to try the vacuum line disconnect when off shift next week and if there's a noticeable difference, i'll try to get some audio for anyone who's interested.

 

Uhm, the links dont work.

 

Sorry, not sure what happened. I'll try to find them on a different server and repost the links.

 

04 Audi B6 S4 Milltek resonated exhaust system with Magnaflow mufflers
youtube.com/watch?v=N-WnzSbVcf0

04 Audi B6 S4 Milltek resonated exhaust sytem with Magnaflow mufflers from stop light.
youtube.com/watch?v=0UbyWqn6kKc

04 Audi B6 S4 Milltek resonated exhaust sytem with Magnaflow mufflers Rolling
youtube.com/watch?v=78Jd8QnGdAE

Copy and paste the links