A specific aftermarket modification exists designed for particular PACCAR MX-13 engines. This modification effectively removes the exhaust gas recirculation system from the engine’s operational cycle. The hardware typically includes block-off plates, coolant rerouting components, and potentially an electronic control module to manage engine parameters after the system’s removal.
The perceived benefits of this modification often involve potential improvements in fuel efficiency, a reduction in maintenance requirements associated with the original equipment, and the elimination of carbon buildup within the intake manifold. Historically, such modifications have been pursued in environments where emissions regulations are less stringent or where the perceived long-term operational cost savings outweigh environmental considerations. However, it’s important to note that altering or removing factory-installed emissions control devices may have legal ramifications and could negatively affect the vehicle’s performance in certain operating conditions.
