Aftermarket exhaust parts and the engine. However, the pipes do "ring" with the exhaust pulses and increase underhood noise. Headers can be ceramic coated to reduce the heat radiated in the engine compartment, and to increase the temperature of the pipes which increases the velocity of the exhaust gases. Terminology: Catalytic converters are necessary to reduce emissions but create back pressure due to the exhaust gases being forced through a catalyst, and therefore decrease high-end engine power. Many modern catalytic converters only produce 1-3 psi of back pressure, though this restriction worsens further with use. Hi-flow catalytic converters can replace the standard units
Exhaust heat recovery system pipe to reduce vehicles fuel consumption. Electric Turbo Compounding (ETC) is a technology solution to the challenge of improving energy efficiency for the stationary power generation industry. Fossil fuel based power generation is predicted to continue for decades, especially in developing economies. This is against the global need to reduce carbon emissions, of which, a high percentage is produced by the power sector worldwide. ETC works by making gas and diesel-powered gensets (Electric Generators) work more effectively and cleaner, by recovering waste energy from the exhaust to improve power density and fuel efficiency. Facing the new American, European, Japanese or