I can hear the difference, straight pipe is louder, I prefer the BTM, the only time I hear the flutter is when I drive near a tall building or large wall when in the city, which isn't often. Then I roll down the window as I like the sound. Before you straight pipe, just know it won't be long before all diesels will be required to pass emissions testing. First part of test is a visual, no muffler, you fail. I hope all those who removed their CAT's saved them!!
NCH
Last edited by NCHornet : 09-11-2008 at 02:49 AM.