Tip:
Highlight text to annotate it
X
Basic muffler technology has changed very little over the years. Developed in the early
20th century, the common packed muffler initially used a steel wool like material wrapped around
a perforated pipe running through an outer shell because it is both simple and inexpensive
to manufacture this basic straight through design remains popular today with many manufacturers.
The one major change to their technology was a gradual switch to fiberglass packing material
for increased durability in this style of muffler exhaust gases enter the muffler body
and expand through the inner pipe into the packing material the sound energy is broken
up and absorbed into this material and converted into heat energy which is then dissipated
through the case of the muffler the exhaust then continues through the muffler and then
exits somewhat quieter than when it entered. In 1983 the exhaust technology changed forever.
Flowmaster’s chambered mufflers like this super 40 series used the exhaust gas and associated
energy to cancel out unwanted sound rather than simply absorbing the energy and using
it as heat. The sound energy is directed into the power chamber of the muffler where the
sound pulses are split apart by the carefully placed delta plates and allowed to collide
together again behind the deflectors this provides a sound cancellation resulting in
that very carefully engineered Flowmaster sound. Meanwhile the exhaust gas itself is
also directed into the power chamber where its energy creates a scavenging affect by
creating additional low pressure behind the deflector plates this process also accelerates
the exhaust flow as the accelerated exhaust exits the power chamber it passes through
the low pressure balance chamber which serves as an anti-reversion barrier to keep atmospheric
pressure from entering the muffler from behind. The exhaust then exits out the tail pipe significantly
quieter and at higher velocity. As you can see there is much more to the exhaust technology
then meets the eye. Here at Flowmaster we will continue to lead the way in developing
new and better exhaust technologies to increase performance and efficiency for anything you
drive.