Every stop light I smell my exhaust. It gets annoying after a while... which is why I'm putting in HFC's.
I've had experience with Riss Racing's 200cell HFC's and it took away the smell 100%.
2009 E92 M3 | Alpine White | Black Extended | Advan RS | Turner Test Pipes | Dinan Axle-Back | OETuning | Eibach Springs | UUC SSK | VRS Front Lip | VRS Type I Diffuser | Matte Black | RPi Scoops | MS Filter | Yokohama AD08 | F1 Pinnacle
Special Thanks: Gintani | OETuning | eAs