This document discusses various bolt-on upgrades that can be made to a turbocharged vehicle system to increase performance. It covers items like intercooler pipes, wastegates, blow-off valves, intake/exhaust porting, catch cans, oxygen sensors, exhaust sizing, and engine tuning. The upgrades generally provide more airflow through the system to enable higher boost levels and improved power output.

2.  Bolt on upgrade kits
for the entire system.
 They are designed
and manufactured by
Mopar, the official
supplier of Dodge
parts.
 3 different levels are
available that each
build upon each
other.
(ATP Turbo)

3.  It is recommended to
install hard pipes on the
cold and hot side of the
intercooler when
increasing boost in the
system.
 Also there is a bottleneck
in the hard pipe on the hot
side that unnecessarily
limits air flow.
 Hard pipes will enable
larger amounts of boost
and increase performance.
(Exhaust Depot)

4.  The stock wastegate
opens at 4psi which
leads to inconsistent
boost and a drop in
top end power.
 Upgrading the
wastegate will reduce
oscillation at high
rpms.
 Many wastegates are
direct bolt-ons.
(JCS Speed)

5.  Blow off valves (BOV)
relieve the back pressure
to the compressor when
the throttle is released
after boosting.
 There is no major
performance upgrade for
installing an aftermarket
BOV.
 A new BOV will provide
the typical turbo “snap”
sound that is standard on
most systems.
(JCS Speed)

6.  The amount of cooling
provided by the
intercooler is directly
proportional to its size.
 After significant upgrades
to the system it is
recommended to invest in
a larger intercooler.
 One note of caution, do
not go for the absolute
biggest available because
if it is oversized it will
create a pressure drop
across the intercooler that
(Turbo Neon Store) will reduce throttle
response.

7.  The more air that can pass
through the intake and
exhaust manifolds, the
more power the system
can create.
 Porting refers to removing
material on the inside of
the manifolds to allow
more air to flow.
 Porting doesn’t require
the purchase of new parts
but is recommended to be
(Circle Track)
done by a professional.

8.  The pvc line from the
valve cover to throttle
body vents excess oil
pressure.
 The oil will then enter the
combustion chambers
through the intake
manifold which is
dangerous and can lead to
detonation.
 The catch can simply
collects all of the oil that
(BWoody Performance) passes through this line so
it can be removed at a
later time.

9.  When increasing
performance in a car it
becomes vital to know
the exact ratio of oxygen
to fuel in the system.
 O2 gauges monitor the
level of oxygen in the
system and
automatically adjusts
the fuel input.
 In turbo charged
systems major damage
(Turbo Neon Store)
can be caused if the
ratio is significantly off.

10.  Similar to porting the
intake and exhaust
manifolds, a larger
diameter exhaust pipe will
allow more air to exit the
engine which will increase
its performance.
 There are many different
options and setups
available but one
recommendation is to go
with a 3” diameter pipe
(Turbo Neon Store) because it is the largest
that will fit with the
system.

11.  The computers on cars
(PCM) are so advanced
that they can be
recalibrated to the desired
“tuning”.
 “Tuning” is adjusting the
electronically controlled
engine parameters to
account for performance
upgrades.
 Flash programmers will
override the stock settings
(Diablo Sport Tuning)
in the PCM to maximize
the performance.