SW or EM headers????
So every cat-back has to be altered to run long tubes.
On my '89 L98 A4, the Stainlessworks 'Y'-pipe joined the collectors
to the OEM cat without modification.
SW used to offer an exhaust for the C4. Personally, I think they
are missing the boat by not building parts or systems to complement
their headers.
.





SW used to offer an exhaust for the C4. Personally, I think they
are missing the boat by not building parts or systems to complement
their headers.
.




