The
GTR's
factory
exhaust
system
is
a
great
design.
With
no
mufflers
(only
two
small
resonators)
Nissan
did
their
homework
to
optimize
the
exhaust
system
design
at
the
factory
480hp
level
(410-420awhp).
However,
as
with
most
exhaust
systems,
the
GT-R's
exhaust
can
be
significantly
improved.
What
is
the
leading
problem
with
the
GT-R's
factory
exhaust
when
it
comes
to
power?
It
is
simply
not
big
enough,
factory
piping
diameter
is
too
small.
This
system
is
adjustable
from
the
driver's
seat
via
a
switch
that
allows
you
to
change
between
a
quiet,
conservative
street
exhaust
note,
to
a
much
louder,
more
aggressive
race
exhaust
note
on
the
fly.
You
also
have
the
option
to
tailor
the
exhaust
note
anywhere
in
between
the
two
extremes
to
find
the
sound
that
best
suits
your
driving
style.
AAM
Competition
Premium
Adjustable
Exhaust.
This
system
will
give
you
incredible
flow
(tested
over
900
wheel
horsepower)
by
significantly
reducing
exhaust
backpressure.
Mandrel
bend
and
hand
welded
right
here
in
our
US
facility,
the
R-Line
Adjustable
Exhaust
features
90mm
T-304
stainless
steel
piping
and
a
specially
designed
3.5"
stainless
racing
muffler.
Fully
adjustable
for
sound
Can
adjust
exhaust
note
anywhere
from
quiet
mode
race,
or
anywhere
in
between
No
Drone
Precision
TIG
welded
T-304
Stainless
Steel
Made
in
the
USA