What is the function of an exhaust? It allows the gases to exit out efficiently. The flow from the engine comes through the headers, to the catalytic converter and out your exhaust. The better we make the process of moving the gases out, the better your Honda Fit performs. An exhaust can easily bump up the car's power numbers.
A properly sized exhaust system allows hot gases to move properly to produce more power.
Three good articles on Exhausts can be found on Team-Integra:
Which ever way you go with an exhaust system, you have two choices: Cat-Back Exhaust and Axle-Back Exhaust. Axle back is where the mid piping is not changed from stock, or custom midpiping is built, while cat back exhaust systems start after the catalytic converter to the muffler.
Cat Back Exhaust Systems:
Skunk2 Racing Mega Power Exhaust
HKS Hi-Power Exhaust
DC Sports Exhaust
GReddy EVO2 Exhaust
Invidia N1 Catback Exhaust
Axle Back Exhaust Systems:
Choose the right Exhaust that will work with the your intake, header and catalytic converter to make an efficient system of power production!