My best time was without my old Truetrac, but still with Drag Radials. 14.6 at 93.04. I got my Tune updated slightly on a Dyno afterwards, hope to hit low 14's this year. I'm going to lighten up a little bit. Bedrug, Rearseat, Tailgate to be removed, etc. I only notice the exhaust when accelerating, otherwise fairly quiet. it doesn't bother me or the family, so must not be too bad.