The Dodge Cummins diesel is a favorite of many diesel enthusiasts because of how many modifications can be done to it. The Dodge Cummins diesel comes stock with great power and fuel economy and can be tweaked to get diesel fuel mileage in the upper twenties and some even report low thirties in mpg. That is phenomenal economy for a truck. They can also be turned into ground pounding monsters. Today we will take a look at a few of the modifications that can be done to make the vehicle either more economical or more powerful.
First the most popular modification for any diesel is a performance chip. These come in chips, modules and programmers. All have the same basic functions although they will all alter the fueling in slightly different ways and have a variety of safety features. Generally for a conservative driver, with almost any diesel chip about three to four mpg increases can be achieved. Most of these chips add about 120 horse power on their top setting. There are some extreme chips though that will add about 230 hp and over 400 torque to the dodge Cummins diesel.
Probably the second most popular modification for the Dodge Cummins Diesel is performance diesel fuel injectors. Upgraded injectors can also add economy for a conservative driver. The injectors come in stages that range from 50 hp to 150 hp over stock, and even more extreme injectors can be custom made. 50 hp injectors would be for someone looking for a little more power and better economy. 150 hp injectors would be considered extreme. They also come in complete injector replacements or just nozzle or injector tip upgrades.
For any diesel that is being modified, a higher flow exhaust should be added to help it keep exhaust gas temperatures down and to relieve engine stress. Most people upgrade the size of the entire exhaust from the turbo. Others use the Aero Exhaust which is a muffler replacement only. The design of the Aero Exhaust increases the speed of the exhaust like a jet would as the exhaust flows through it. On the 2005 Dodge Cummins diesel the Aero Exhaust adds 19 hp and 38 dyno tested torque by just replacing the muffler.
Another popular modification is the cold air intake which allows more air into the engine which helps to combust a higher percentage of the fuel. This gets more power to the wheels instead of out the tail pip in a big black cloud.