Johnnylayg

Looking into adding a 40 series or 10 series flow master with turndown in my 2014 5.3 Sierra. Any advice on which might be best? I did hear there is sort of a drone when in v4.. Any advice is helpful. I do a lot of high way driving. Want to sound aggressive not overly annoying when I have my daughter Looking into adding a 40 series or 10 series flow master with turndown in my 2014 5.3 Sierra. Any advice on which might be best? I did hear there is sort of a drone when in v4.. Any advice is helpful. I do a lot of high way driving. Want to sound aggressive not overly annoying when I have my daughter