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The magnitude of the exhaust scavenging effect is a direct function of the velocity of the high and medium pressure components of the exhaust pulse. Performance headers work to increase the exhaust velocity as much as possible. One technique is tuned-length primary tubes.
Headers are generally made by aftermarket automotive companies, but sometimes can be bought from the high-performance parts department at car dealerships. Generally, most car performance enthusiasts buy aftermarket headers made by companies solely focused on producing reliable, cost-effective, well-designed headers specifically for their cars.
Locations where exhaust pipes from individual cylinders merge are called "collectors". The diameters of the exhaust system are designed to minimise back-pressure by optimising the gas velocity. Extractors/headers usually have equal length pipes for each cylinder, whereas a more basic exhaust manifold may have unequal length pipes.
2009 Lingenfelter C6 ZR1 at the 2011 Chicago Auto Show. Lingenfelter Performance Engineering (LPE) (also known as Lingenfelter) is an American automotive engineering manufacturer specializing in high-performance automobile modifications, manly and specifically engine blocks, intercooling, transmisson, exhaust pipes, valvetrains, suspension, brakes, pistons, camshafts, and supercharging, Now ...
The package includes a high-flow supercharger and intercooler providing 14 psi of boost pressure, custom camshaft, ported cylinder heads, upgraded valvetrain with new springs, lifters, pushrods and valves and long-tube stainless steel exhaust headers with high-flow catalytic converters. The cars equipped with the automatic transmission will ...
An upgraded 3.8L flat-6 rated at 385 hp is the soul of the GTsport. This modified sports coupe is capable of speeds up to 177.1 mph and a 0-60 time of 4.8 seconds. Upgrades to the engine include a sports camshaft, aluminum headers, modified intake manifold, high performance exhaust system and a remapped ECU. Aerodynamic upgrades include a ...