It is important to note, however, that going too large may cause a dip in performance when gases pile up and exit the system slower resulting in torque, rpm, and horsepower loss. After the emissions are channeled out from the cylinders by the exhaust manifold, they are deposited into different catalytic converters. The IE Catback Exhaust System for your Audi B9/B9.5 S4 incorporates our in-house engineered DroneTrap technology to deliver a truly aggressive exhaust note without any annoying drone or rasp. Engineered with cutting-edge design features, including mandrel-bent stainless steel, TIG welding, multi-point reinforcements, and oversized quad tips. A catback exhaust system is a type of aftermarket exhaust system that replaces the muffler and tailpipe of a vehicle. It is called a "catback" system because it starts at the catalytic converter, which is located in the middle of the...

Follow us on Facebook, Instagram, YouTube and Twitter to stay up to date on our latest products, projects, and adventures. Join the conversation and show off your ride with #MagnaFlow for a chance to be featured. Overall, cat back systems are relatively low-maintenance and easy to keep in good working order. There are a few common problems that can occur with cat back systems, but fortunately, they are relatively easy to fix.

The difference in fuel economy is, however, more obvious while driving on a freeway. They also do not offer the best performance due to many reasons. If you're looking for an off-road exhaust with&nbsp