The removal of emission control systems from diesel engines is a practice gaining attention. This process typically involves disabling or removing components such as the diesel particulate filter (DPF), exhaust gas recirculation (EGR) valve, and selective catalytic reduction (SCR) system. As an example, a truck owner might choose to remove the DPF to avoid frequent regeneration cycles or potential clogging issues.
This modification is often pursued to improve fuel economy, increase engine performance, and reduce maintenance costs associated with malfunctioning emission control devices. Historically, the practice has been driven by concerns about the reliability and expense of these systems, particularly in older diesel vehicles. However, it is crucial to acknowledge that tampering with federally mandated emission control equipment is a violation of environmental regulations in many jurisdictions, leading to potential fines and penalties.
