Customer Help

It is best to have an estimated horsepower goal in mind while ordering parts to ensure longevity and performance.

For instance, building a 6.7L Cummins may become a larger task than expected, especially with the incorrect parts for your application.

If you need assistance with selecting the proper aftermarket equipment please email FDP at [email protected] we are happy to help.

Cummins began utilizing Bosch manufactured injectors in 2003 and continues to use them in the current generation of Ram trucks. Bosch fuel injectors spray a precise amount of fuel into the combustion chamber at the exact time commanded. Actuated with a solenoid located inside the injector, the duration and timing are controlled from the ECU.

The stock fuel system on a 5.9 or 6.7L cummins can supply enough fuel for ~550 WHP.

These numbers are estimates based on fuel quantity supplied. There are many limiting factors in making horsepower such as turbo size and supporting modifications. The specifications found below are estimated with Exergy Performance injectors.

The CP3 is the high-pressure injection pump used on 2003 – 2018 and 2021+ model year engines. The CP3 is gear driven from the front timing assembly and can be removed and replaced without digging into the front cover. 

This high pressure pump can fuel over 30,000 PSI of rail pressure to your injectors for the entirety of its lifetime. Many aftermarket options are available from stock power levels to high horsepower racing applications. Many trucks pushing major horsepower run a dual CP3 setup utilizing a longer belt to drive the secondary pump. In this sequence it may be possible to power a 1000hp truck with two stock Bosch pumps.

Exergy CP3 pumps are rated as follows:

These numbers are examples of what is possible if a truck is built properly with the associated injectors and turbocharger sizes.

For the 2020 and 2021 model year 6.7L Cummins, a CP4 pump was used as an upgrade for the CP3. This was short lived due to the failures associated with the CP4 pump. Trucks can be converted to swap from a CP4 to CP3 if desired, otherwise the CP4 must be maintained diligently.

Turbochargers have changed between each generation of Ram pickup and vary drastically between model years. In 2007.5 the variable geometry turbocharger was introduced to the Cummins 6.7L engine adding an exhaust brake to the mix. Utilizing an electronic actuator, the VGT system can be opened or closed.

In situations where performance is priority, or mechanical failure has taken place, the VGT turbocharger can be switched to a standard oil cooled charger. Commonly referred to as a 2nd gen swap due to the style of exhaust manifold. Although this is the most common, several options are possible to replace a factory turbocharger.

OBD2 is the “On Board Diagnostics” system found on modern vehicles. This system monitors the performance of vehicle components and systems. With the help of a proper scan tool, light work can be made of many problems found in light duty trucks today.

It is recommended to use an active vehicle monitor to have quick access to check engine light codes. For an emissions-on truck live display monitors show DPF regeneration status and help detect an issue before it prevails.

A core charge consists of a part that must be returned to the manufacturer. There are a variety of reasons that require a core charge such as an item that is no longer being manufactured. The core charge must be accepted prior to checkout and is fully refundable upon return.

The exhaust gas re-circulation (EGR) works by returning a small amount of exhaust gas to an engine through the intake manifold. This process lowers combustion temperatures and NOx emissions. This also circulates unburnt fuel and carbon back to the intake and will create carbon buildup over time.

Common problems associated with the EGR are the grid heater clogging and failure of the EGR valve. With the proper maintenance and due diligence many of these issues can be remedied or avoided. 

A diesel particulate filter is used in nearly all new light duty truck applications to remove diesel particles also known as soot from the exhaust gas flow.

Essentially, soot becomes trapped in the filter media of your DPF before a passive regeneration takes place. From this point a Selective Catalytic Reduction (SCR) will begin by spraying urea based diesel exhaust fluid into the airstream.

This process reduces soot to a non-visible condition and reduces NOx emissions.