Hi all, I've had my Almera for a little while now after my focus went to the great scrap yard in the car, it's only 1.4 so not hugely exciting and was thinking seeing as it's just passed it's MOT so will be sticking with it for a while if any one with the same engine has changed the air filter to something a little better than the standard one and if there are any pro's and cons? any help would be really appreciated, cheers