Definately not worth retrofitting. I have never used it in any BMW. It just doesn't work well, and by the time the system understands your command you could have entered it with the knob or buttons five times.
2008 E63 M6
- Black Sapphire - Sepang Bronze Full Merino - Carbon Fiber Trim - Alcantera Headliner - SMG - HUD - Soft Close Doors - Comfort Access - Individual Audio w/Sat and HD Radio
2009 E92 335i
- Black Sapphire - Black Dakota - Burl Walnut - Sport - Premium - Cold Weather - Navigation - L7 - Comfort Access - Smoker's Package
Member: BMWCCA #471614