NYKBOB
Active Member
My unscientific results: I reset the gas mileage with every tank fill-up. Since installing the Borla S-Type and K&N 77 Series intake I have noticed a change for the better. Just checked yesterday with about 65% highway since last fill-up, and averaging 19.8 mpg. In just around-town I believe I gained a little better than 1mpg since install. Great sound and uptick in performance as well.