This is achieved by burning off the excess hydrocarbons which result from the extra-rich mixture required for a cold start. Slightly lean of stoichiometric, the exhaust gases from the engine contain excess oxygen, the production of NOx by the engine increases, and the efficiency of the catalyst at reducing NOx falls off rapidly. However, the conversion of HC and CO is very efficient due to the available oxygen, oxidizing to H2O and CO2. However, the efficiency of the catalyst at reducing NOx is good, and the production of NOx by the engine decreases.

If you've got questions about cat-back exhaust systems, pipe diameters, muffler type, or anything else, talk with our product specialists. All 1995 model year vehicles, and all 1992 model year or earlier vehicles. All model year vehicles that were manufactured with EPA or Federal emissions certification. Exhaust gases from the cylinders are collected in the exhaust system to prevent harmful fumes from entering the vehicle.

These two work together to offer better flow and allow the system to breathe better. We are one of few brands that own our factory thus enabling us full control over the manufacturing process, selection of raw materials, and construction techniques. Install your IE catback without any permanent modifications or installation hassles. The installation process is straightforward and accomplished with standard mechanic tools.

The cat back system’s pipes have a larger diameter than a standard set. So, your vehicle will get to perform better at a fraction of the work it outputs. An&nbsp