64SF
Well-Known Member
As mentioned many times by many members the drone produced with the Flowmaster mufflers can be mind numbing. After an extensive search on the Internet and reading posts here I had installed a version of whats called a Hemholtz Resonator. It's nothing more that a length of pipe installed on each exhaust pipe before the mufflers and capped at the end. It has reduced the drone by at least 95%!....I can now carry on a conversation while cruising at 40-50 MPH! It did have a slight effect on the exit sound but to me it's actually a little less "raspy". Length is about 28".