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 BMW i8, 2014 Hyundai Santa Fe, 2017 BMW M240i EB, 2015 Porsche Cayenne
2013 Tesla Model P85 (sold), 2010 RR Phantom (sold), 2014 S550 (sold), 2012 Porsche Panamera S (sold) 2015 Bmw M4 (sold), 2011 BMW M3 (sold)