[s-cars] Split Exhaust system

[steve powers]

Trevor:

> Do the aftermarket exhausts for our s4's stick with the twin pipe
> arrangement from the firewall back or do they remove the split downpipe & 
> go
> with a single 2.5" or 3" pipe all the way through?

Stromungs are single all the way from the turbo to the rear muffler. (3" 
tube)

Steve