Namely, it replaces the rear axle-back and tips and then a portion of what we refer to as the mid-pipes. This system is emissions friendly and doesn’t require any tuning. In New Jersey, vehicles must pass emissions testing to ensure they meet environmental standards. Since cat-back exhaust systems do not modify the catalytic converter or engine management system, they generally do not affect a vehicle’s ability to pass emissions testing.
The time and money you spend are a big investment, and we want to help you make the best decision for your driving dreams. Typically, a cat-back exhaust system will increase your car’s horsepower by somewhere between 5 and 50 brake horsepower. This will vary greatly depending on the condition of your exhaust and engine, so you should ask your mechanic if getting a cat-back exhaust is the best way to improve the performance of your car.
By running pipes from the catalytic converter to the muffler and from the muffler to the exhaust tip, cat back exhaust systems improve exhaust gas flow, providing small performance boosts. However, your performance gains may be limited if your catalytic converter restricts gas flow, as a catback exhaust system is installed ‘downstream’ of the converter. Header-back systems are increasingly rare, namely because of modern emissions systems. Since removing your vehicle’s factory emissions components is highly illegal, the previous two options are more common. However, header-back systems are still available for some older, pre-emissions applications. In these cases, header-back systems offer more performance and volume than cat-back or axle-back systems