reducing exhaust drone
with 2 Dynomax 17629 2.5 in and out mufflers
are these 3-pass muffs?
Is the exhaust suspended on isolation hangers.?
Drone, on a full-length system, is almost always caused by the mufflers.
>Unless it happens at about 55 mph, which is the speed at which the rotating tires like to excite the body's natural frequency of vibration. or
>Unless you are cruising with windows down, which will also excite it. or
>Unless your cruise rpm is extremely low.
I have never heard of "exhaust silencers" that you stick into the tailpipes.
Great idea tho; I made my own back in 1976. I rolled up some corrugated cardboard and stuffed them up the pipes then pinned them into place with nails. To get them out (they were stuffed way up there so the cops couldn't see them), I pulled the nails and rapped the throttle a couple of times until they blew outta there, lol.
Now I have TTI turndowns.No drone.
