While on the exterior the sound may be viewed as aggressive the inside of the cabin is still civil courtesy of an incorporated Helmholtz chamber design that reduces resonance or"drone" at low RPM
making it 100% emissions legal for everyone
These are hand crafted from 304 grade stainless steel tubing and include a lifetime warranty
Giving you the option to drive around in "Comfort" mode with the valves closed
P3 Gauge - BMW 6 Series M6 E63 / E64 Driving Position:Left Hand Drive While on the exterior theCustom built multi function digital boost gauge and more for the E63 and E64 generation (2003 2010) BMW 6 Series, including 630i, 645Ci, 650i, M6, 635d, and all xDrive variants. Form and Function Every P3 Gauge is built just for your car. It fits perfectly like it was born there. Stealthy. Stylish. Smart. In one sleek display you get real time access to everything that matters Boost, Engine Temps, Performance Timers, Code Reading Clearing, and more.