Sorry to bump this old thread, but how are you liking this setup? Can you hear it in the cabin at all? I know it will sound a bit different on the e92 but I am thinking about doing this very soon.
2007 335i E92:
Jet Black on Black | JZW Tune | Alpina B3 Flash | Orion V2.5 | BMW Performance Spoiler High Kick | Aero Lip | 6000K HID Headlights/Fogs | Painted Reflectors | BMS Intake | CSL Style Wheels | CIC iDrive | M3 Steering Wheel/Alcantara Trim | V1 | Combox/6NR | Aluminum Trim