At Euro Car Parts, we have exhaust parts to help you do just that. It is important to note that the fuel saving will be more noticeable when traveling at freeway speeds than city driving, but if you spend a lot of your day on the road, you’ll likely notice the difference. View our technical tips to help you install, learn about and maintain your exhaust system the right way.

Noticeable gains will be noticed in the initial throttle response, with reduced turbo lag. Engine movement and exhaust weight are transferred into the exhaust hangers, which puts a lot of stress on the mount brackets. IE's catback system is manufactured with multi-point and boxed-in hanger mounts designed to stand the test of time. Drive confidently knowing your exhaust is securely mounted and protected against annoying rattles or breaks. All piping is constructed of mandrel-bent T304L stainless steel to offer superior corrosion resistance.

Advanced 3D scanning tools and cutting-edge software provide our engineers with a high-resolution digital model of the Audi B9 S4 chassis. This data is then used to maximize the exhaust size for flow and optimize all available space for the perfect catback fitment. CORSA branded exhaust systems are backed by a Limited Lifetime warranty for as long as you own your vehicle with proof of purchase. The new exhaust sounds perfect, a marked improvement over stock. It is not too loud - I use the car as a daily driver and drive in capital beltway traffic.

In layman’s terms, a catback exhaust system provides a smoother, more streamlined path for exhaust gases to exit your car, allowing your engine to work more efficiently. When catalytic converters were first introduced, most vehicles used carburetors that provided a relatively rich air-fuel ratio. Oxygen (O2) levels in the exhaust stream were therefore generally insufficient for the catalytic reaction to occur efficiently.

In California, it is illegal to select a catalytic converter for installation based solely on vehicle weight and engine size. The design of these systems often sees an increase in horsepower compared to the factory design of a vehicle. Because stock models try to minimise materials and maximise space, with horsepower as a lower priority.

One issue is that the system can become clogged with dust and debris over time, causing reduced performance. This can be remedied by regularly cleaning the system with compressed air or a soft brush. Finally, it's always a good idea to check for leaks after installation.

Because the engine won’t generate as much fumes and doesn’t need to work as hard to eliminate or minimize the fumes, your car will run better, saving you mileage. A benefit like this will improve the longevity of your car and even save you money at the gas pump. At Bradley’s Auto Service in Red Bank, NJ, we can build a completely custom exhaust system for your vehicle, including cat-backs. We will work with you to create your exhaust exactly the way you want it, with any combination of look, sound, feel, power, or muffler at your fingertips.

Next we have the option we refer to as the Cat-back system (sometimes also known as "with Front Pipe" exhaust). One of the most noticeable changes after installing a cat-back exhaust system is the sound. The exhaust note becomes deeper and more pronounced, giving your vehicle a more aggressive tone. The specific sound varies depending on the muffler and pipe design, allowing drivers to choose a system that matches their preference for loudness and pitch.

You’ll save right away when you add a front-pipe and a downpipe to your base system over buying each of these individually. Many car fanatics love a unique sound for their ride, almost similar to a racecar. It’s no secret that the standard vehicle exhaust system won’t produce a roaring or distinguishable sound. This is where a back cat exhaust system will be favorable to any motorist. The upgraded system will give you a more enjoyable, louder ride. But this is where certain systems will do better than others, so be sure to look into which one will be right for you.

Since 2003, we have specialized in building BMW M-models (and Tesla) with a refined selection of industry-leading, high quality products. Our 8,000 sq/ft installation facility and shipping headquarters is located in Anaheim, California. IE's advanced DroneTrap technology captures the pulse waves responsible for your B9 3.0T engine's exhaust note and draws them into dual mathematically tuned resonators. The internal ports are engineered to resonate these waves against each other in a process that selectively cancels out those responsible for annoying drones.

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.

Most designs of the time therefore included secondary air injection, which injected air into the exhaust stream. This increased the available oxygen, allowing the catalyst to function as intended. Cat-back exhaust systems replace every component behind the catalytic converter, including most piping, mufflers, resonators, and tailpipes.

To maintain catalyst efficiency, the air–fuel ratio must stay close to stoichiometric and not remain rich or lean for too long. All of Milltek's performance exhaust systems are manufactured from T304L stainless-steel