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  2. Exhaust system - Wikipedia

    en.wikipedia.org/wiki/Exhaust_system

    Aftermarket exhaust parts can increase peak power by reducing the back pressure of the exhaust system. [ 12 ] [ 13 ] These parts sometimes can void factory warranties, however the European Union Block Exemption Regulations 1400/2002 prevents manufacturers from rejecting warranty claims if the aftermarket parts are of matching quality and ...

  3. Arrow (motorcycle part manufacturer) - Wikipedia

    en.wikipedia.org/wiki/Arrow_(motorcycle_part...

    Arrow was founded in 1985 in Italy by Giorgio Giannelli to make high performance exhaust systems. The company's first association with motorsports success was with Belgian rider Jobé winning the 500 cc Motocross World Championship. Since 2000 Arrow parts have been used on bikes that won 20 World Titles, in SBK, SS, MX and Supermoto. [1]

  4. Exhaust manifold - Wikipedia

    en.wikipedia.org/wiki/Exhaust_manifold

    Exhaust wrap is wrapped completely around the manifold. Although this is cheap and fairly simple, it can lead to premature degradation of the manifold. The goal of performance exhaust headers is mainly to decrease flow resistance (back pressure), and to

  5. Tuned exhaust - Wikipedia

    en.wikipedia.org/wiki/Tuned_exhaust

    A 4-2-1 exhaust system is a type of exhaust manifold for an engine with four cylinders per bank, such as an inline-four engine or a V8 engine. The layout of a 4-2-1 system is as follows: four pipes (primary) come off the cylinder head , and merge into two pipes (secondary), which in turn finally link up to form one collector pipe.

  6. Diesel exhaust - Wikipedia

    en.wikipedia.org/wiki/Diesel_exhaust

    SNCR systems have been prototyped that reduce 90% of the NO x in the exhaust system, with commercialized systems being somewhat lower. [citation needed] SCR systems do not necessarily need particulate matter (PM) filters; when SNCR and PM filters are combined, some engines have been shown to be 3-5% more fuel efficient.

  7. Exhaust heat management - Wikipedia

    en.wikipedia.org/wiki/Exhaust_Heat_Management

    Exhaust heat wrapping has been used for many years to improve performance and avoid burns from motorcycle exhausts. Heat wrap consists of a high-temperature synthetic fabric which is wrapped around the manifold. Often sold as a cheap and easy way to boost horsepower, exhaust wrap does not increase engine output much. [1]

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