My father is looking at Supercharging his 2000 Si, and he is curious as to how it will affect his gas mileage.
quicksilver1689 said:think of it like this , more air needs more fuel. So the mpg will go down i dont think youll have to worry with a supercharger and mpg. as long as he isnt WOT all the time then it might only go down a couple mpg.