Aftermarket exhaust parts restrictions in the system—can similarly increase performance, though would likely be illegal in areas where tampering with emissions devices is prohibited, particularly when placed in front of the catalytic converters. Aftermarket exhaust parts Aftermarket exhaust parts are intended to replace the factory fitted exhaust components of a car, motorcycle, or other motor vehicle in order to improve the performance, visual appeal, or sound of the vehicle. Generally, performance enhancements are achieved by reducing the back pressure of the factory exhaust system. Frequently a side effect of a free-flowing exhaust system is either a "different" sound, a higher noise level, or
Pollution Probe achieved the passage of mandatory vehicle emission testing in Ontario. In 2004, Pollution Probe helped to obtain further regulations in Ontario to reduce metal smelter facility emissions that can cause acid rain. In 2010, the organization helped to persuade the legislature to enact regulations to limit car and truck greenhouse gas emissions. In 2013, the organization collaborated with five power utilities to launch the Electric Mobility Adoption and Prediction ("EMAP") project. In 2016, Pollution Probe and Plug’n Drive issued a report with recommendations intended to increase sales and use of electric vehicles. In 2017, Pollution Probe was appointed one of