Why does the motorcycle waste more fuel with sporting exhaust?
The fuel waste is due to the fact that the sporting exhaust increases the outflow of gases produced on the motor combustion generating higher performance of the motorcycle. Usually the waste increases about 2 to 3 km/l however it can be higher depending on the way the motorcycle is leaded. A good reminder is that without equalizing the carburetion right after installing the sporting model makes the motorcycle to waste more fuel than mentioned here, because it is adapted to an original exhaust which out flowing of gases is lower, occurring what we call poor mix on the carburetion, forcing the driver to put on speed for a better performance. On the other hand, a well done equalization leads to an increased performance and uses just a few more of fuel.