A stock system is designed to reduce and if possible eliminate all the noise produced by your vehicle. Because of this, the axle-back exhaust system does not impact the flow or pressure of the exhaust gases in any way. The axle-back exhaust system uses the factory exhaust pipe which does not have a large diameter. This offers even more breathing space for the engine thus better performance. Most cat-back exhaust systems are customized and not universal. One is to replace specific parts like with cat-back exhaust systems.
Engines fitted with regulated 3-way catalytic converters are equipped with a computerized closed-loop feedback fuel injection system using one or more oxygen sensors (also known as Lambda Sonds or sensors). Other variants combined three-way converters with carburetors equipped with feedback mixture control were used. An unregulated three-way converter features the same chemical processes but without the oxygen sensor, which meant higher NOx emissions, particularly under partial loads. These were low-cost solutions, typically used for retrofitting to older cars or for smaller, cheaper cars. Axle-back exhaust systems replace only your vehicle’s rear exhaust section, usually consisting of items behind the rear axles, like rear exhaust pipes, muffler, and exhaust tips. A