The APR Catback Exhaust System personalizes your vehicle’s looks, sound and performance. You get the only the best with SPD's 3" resonator f250 delete pipe pipes. These 304 Stainless Steel pipes are .. SPD's high performance stage 1 resonator cat-back pipe replaces your factory resonator pipe with a t..
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