Mustangs w/aftermarket performance mufflers suffer from drone at 1800 to
2000 rpms that is absolutely maddening. I have dynomax straight thrus & an
X-pipe & have to speed at 70+ or poke along at 55 to avoid the "drone zone"
which, with 355 gears comes at 60-65 mph in 5th in my Mustang. Very loud
doo-wop can counteract to some extent.
The drone is supposed to be a result of substituting same size dual
aftermarket mufflers & a 21/2" system for the factory's two different size
mufflers & 21/4 size system.
As to Flowmasters, I have never seen them on a daily driver where the owner
is old enuf to shave every day. Loudest of all, and with their internal
baffle design, they rob horsepower & torque.
Steve Laifman wrote:
>
>
>
> Most Flowmaster users are complaining that the 30-40 series are too loud
> for daily use, and will drive you nuts on long trips (aside from
> catching the ear of the guys in blue.)
|