twinsteve
November 11th, 2010, 01:07
Anyone seen/heard the BB cat-back exhaust for RS6?
JSRS6
November 11th, 2010, 04:39
It is purportedly the same as the APR cat back for the rs6, as APR buys from bb and stamps it APR.
papadoc
November 13th, 2010, 06:41
I have the APR version, manufactured by Billy Boat. There is a low frequency hum when driving slowly and at around 1600 rpm, but otherwise the sound is richer than the OEM setup. The setup ends with dual exhaust pipes from each side, rather than the single large opening of the base exhaust. I have never found any claims for increased HP. Should you decide to go this route, you will likely find someone to purchase your original exhaust as I did, which will discount the price for you.