When you add an K&N intake and a cat back exhaust, it gives the car more performance, 15-20 hp, right? How does this affect gas mileage?
Robin Forest
1999 Contour SVT
-18" Enkei gunmetal/polished lip mags with G-Force tires
- H&R lowering springs with Koni koni yellows
- CrossDrilled KVR Python
Too much to list...
