so this golf tee mod is putting you rubber things on 2 vacuum outlets? Can I do this without lifting the car on a lift? Does it sound deeper only at startup or while you drive too? I already have a catless DP so I wonder how much louder the car will be? Crazy enough, this is the first I've heard of this exhaust mod. I must be in a Z hole.
2015 M4 (on order - ED in September 2014) Mineral Grey with SO
2013 Tesla Model S, 2011 Land Rover Autobiography, 2010 RR Phantom, 2012 S550
2010 AW E92 M3 (SOLD) 2009 Z4 Sdrive35i (SOLD)