Your Subaru Impreza Exhaust System consists of several elements that work with the fuel intake system to maximize performance while minimizing fuel consumption and toxic emissions. It all starts with the header, or exhaust manifold. Pipes from the cylinders merge into a collector before being sent on to the catalytic converter.

It is in the catalytic converter that deadly carbon monoxide and nitrous oxide gases are converted into less harmful compounds by breaking up the atomic structure and recombining them into different molecules. (Pretty heady stuff, eh?) As the exhaust gas continues its journey to the outside, it passes through the oxygen (or O2) sensor.

This device really takes over the function of the old choke knob, sending electronic signals to the fuel injectors which make constant fine adjustments to the fuel/air mixture in response to changing driving conditions. The last stop is the muffler, which takes the ear-shattering noise of those thousands of cylinder explosions every minute and transforms them into a quiet purring noise. The muffler uses a special acoustic chamber in order to bounce the sound waves back against themselves, effectively canceling them out. Finally, exhaust gases - now in the form of harmless CO2, nitrogen and water vapor - exits out the tip, or tailpipe. If you like, you can improve performance by adding a custom header and/or an X-pipe to your Subaru Impreza Exhaust System. Both of these accessories allow for more efficient flow of exhaust, adding to your engine's horsepower potential. All elements of the Subaru Impreza Exhaust System are available here in our online store for the lowest prices anywhere.We'll meet or beat the competition, and pay shipping on all overs of $50 or more!