A device or set of components intended to remove or bypass specific emission control systems on Volvo D13 engines constitutes this type of modification. These systems typically include the Diesel Particulate Filter (DPF), Exhaust Gas Recirculation (EGR), and Selective Catalytic Reduction (SCR) systems. For example, a kit might contain electronic emulators to prevent error codes after the physical removal of the DPF.
The employment of such alterations is often associated with perceived enhancements in engine performance and fuel efficiency. Historically, engine operators have explored these modifications in pursuit of reduced maintenance costs linked to emission control devices. Additionally, simplified engine operation in specific applications, such as off-highway or racing environments, may be a motivating factor. It’s important to acknowledge that removing emissions equipment can have detrimental effects on air quality.