it will effect ur fuel consumption a little bit laa.. not to say it wont affect at all, it will all depend on ur setup and the design of the muffler and bullet.. dont bother bout the FC if u r hunting for power.. ur heavy foot will contribute more effect than the exhaust system..
i am currently looking for original altezza air filter box assembly...... the whole air filter box together wit the air filter.....anyone got one lying in the...