Upgrades

UPGRADING THE TURBO CHARGING

SYSTEM OF SRT-4S

Mopar Upgrade Kits

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)

Compressed Air Piping

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)

Wastegate

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)

Blow Off Valve

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)

Intercooler

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 will reduce throttle response.

(Turbo Neon Store)

Port Intake and Exhaust Manifolds

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 done by a professional.

(Circle Track)

Oil Catch Can

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 passes through this line so it can be removed at a later time.

(BWoody Performance)

O2 Gauge

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 can be caused if the ratio is significantly off.

(Turbo Neon Store)

New Exhaust Pipe

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 because it is the largest that will fit with the system.

(Turbo Neon Store)

Flash Programmer

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 in the PCM to maximize the performance.(Diablo Sport Tuning)