Why you shouldn't delete your emissions system...

So what does it mean to delete your system?

Diesel exhaust is known for being a dirty and oily soot and carbon buildup from the exhaust will eventually clog up the EGR (exhaust gas recirculation) valve, EGR sensors, EGR cooler, DPF (diesel particulate filter), DOC (diesel oxidation catalyst and catalytic. As these components plug up, performance and fuel economy will drop meaning that these emissions-related parts will have to be cleaned or replaced. Some diesel owners are removing to “delete” these pollution-control components instead.

A diesel delete involves taking out the DEF system, removing the catalytic converter and DPF, and installing a new exhaust. The vehicle’s ECM (engine control module) will also have to be recalibrated using a tuner. This tuner will replace the OEM (original equipment manufacturer) program with a new software that controls the fuel delivery and engine timing and removes some parameters that were previously coded.

The tuner will also recalibrate MCM / ECM (motor control module / engine control module) to properly monitor engine operating parameters and ensure that there will be no emissions-related codes pop up because of the missing / block parts.

After a diesel delete is completed, the soot-clogging issues are eliminated. There may also be performance improvements such as an increase in torque/horsepower as well as an improvement in fuel economy. These positive changes can depend on the tuner, the after-market software, and the engine hardware.

There are three types of kits available when it comes to performing a diesel delete: DPF, DEF, and EGR. These diesel engine services are popular among diesel owners.