I was visiting family in Boulder (Pearl St. area) back in Feb and saw a red RS4 two or three times while walking around town. what caught my attention (aside from the fact that it was a RS4) was the incredible exhaust sound and now that i own one it was definitely not stock.

anyone here familiar with the car? i'm going to guess it had a Milltek exhaust. if it was stock (sport mode) i'd be absolutely shocked!

thanks in advance!

I saw the same car twice on pearl street as well while out there visiting friends and skiing.
It was snowing like a bastard and was all washed and waxed - didnt quite fit in with all the toyota FJ's and old landcruisers around town. Not sure about the exhaust, but it sounded very nice!!

thanks very much for the response....beautiful car nonetheless.