honestly I swapped it over just cause it looks better lol eventually ill get a tune done im just buying everything second hand as it comes up and if I have spare cash. realistically the stock turbo is going to max out at like 320 anyway, im not ever going to track the car and I dont plan on doing a turbo swap as this is my daily the ef is/was my muck around car. heres a pic of size comparison. heres how I did my box cut I made a little shroud from an other air box ill prob do a similar thing on the side aswell as it leads to a hole in the guard although I dont think it will have much more effect on induction noise