I have AR catless on my IS and I am not a big fan as it is too raspy for me. I am hoping to get resonators installed soon. It is so loud right now when I start up in the morning.
BTW, I had AR in my previous 335i with stock exhaust and I loved it
Current | 2011 E92 M3 - Mineral White, Black
Sold! | 2011 E92 335is - Titanium Silver, Black
Sold! | 2007 E92 335i - Space Gray, Black
Sold! | 2008 E90 M3 - Jerez Black, Fox Red