I would suggest injen > check out the injen writeup at
HondaFitTuner.com
It can be converted to short ram too. You can probably get it for less than $200 shipped to you, check this
one, I would get one but its pretty tight on cash right now
. Regarding gas mileage, it really depends on how you drive, if you drive just for the sake of transport
, you should see an increase as the engine breathes better(=better performance,throttle response etc), BUT, if you constantly drive in high rpm's to hear the intake growl
, its possible you wont notice a difference in gas mileage or worse, get less mpg
. A lot of people who installed aftermarket or did the SID's noticed better mpg...my .02 cents