who has done mods to their car like air intake and full cat back
what kind of gas milage are you getting can not tell fill i am getting better or worse

 

I have cut-off my resonators,added exhausts, and added an intake, but I dont really see much change in gs mileage. I do get a bit more power around 2.5k rpm and above.

I have changed my HKS intake to a Blitz intake and the Blitz intake does add a bit more power which is noticeable at stops. It does not feel as sluggish as it did when I had my HKS on. I will keep a eye on the gas mileage with the Blitz intake.