The
OEM
midpipe
is
one
of
the
biggest
restrictions
in
the
G37
exhaust
system.
Infiniti
figured
this
out
when
they
redesigned
the
catback
system
for
their
Infiniti
G37
in
order
to
adapt
a
more
free
flowing
system,
which
included
a
redesigned
H-pipe
with
dual
outlets
as
opposed
the
previous
Y-pipe
with
a
single
outlet.
With
the
revised
exhaust
system
and
a
slight
tweak
to
the
ECU,
the
G37's
gained
18
crank
hp
from
the
factory.
With
the
success
of
the
Nismo
exhaust,
AAM
Competition
took
this
one
step
further
and
designed
the
S-Line
Midpipe,
a
true
2.5"
exhaust
system
connecting
the
factory
catalytic
converters
to
the
stock
rear
muffler.
The
factory
Nismo
H-pipe
and
intermediate
pipe
starts
off
at
2
1/8"
from
the
factory
catalytic
converters,
opens
up
to
2
1/4"
at
the
intermediate
pipe,
then
taper
back
down
to
2
1/8"
by
the
time
it
hits
the
muffler.
Although
we
would
never
doubt
Nismo
parts,
we
took
on
the
challenge
of
designing
a
larger
and
more
efficient
system.
The
S-Line
midpipe
has
been
dyno
proven
to
gain
+20
hp
to
the
wheels
and
+19
ft
lbs
of
torque
over
a
stock
370z,
equipped
only
with
our
short
tails,
all
else
stock!
AAM
Competition
S-Line
Midpipe
is
handcrafted
with
mandrel
bent
2.5"
16
gauge
T-304
stainless
steel.
The
system
consists
of
a
2.5"
H-Pipe
and
a
2.5"
resonated
intermediate
pipe.
This
makes
it
perfect
for
those
who
want
the
added
performance
of
an
upgraded
midpipe
but
want
to
keep
the
factory
muffler
to
keep
exhaust
volume
down,
or
those
who
already
have
our
short
tails
and
would
like
to
continue
the
rest
of
their
exhaust
system.
2
component
system;
2.5"
H-Pipe
and
2.5"
resonated
intermediate
pipe
Connects
factory
catalytic
converter
to
stock
rear
muffler
(Nismo
or
Non
Nismo)
or;
Direct
bolt
on
to
AAM
Competition
S-Line
Short
Tails
2.5"
mandrel
bent
16
gauge
T-304
stainless
steel
T-304
stainless
steel
flanges
Precision
TIG
welded
in
house
Dyno
proven
+22
wheel
hp
+20
ft
lbs
of
torque
in
conjunction
with
S-Line
Short
Tails
Dyno
proven
+12
wheel
hp
+7
ft
lbs
of
torque
in
conjunction
with
stock
rear
muffler
All
hardware
included
Made
in
USA