Pyoum,
Newport Beach, California
I just bought a used 93 Mercury Capri, drove it through 2 full tanks of gas then put on my K & N filter. Outside of sounding a little more vital I noticed an increase of 3 mpg overall. Understand that's 3 mpg in California traffic gain. That's a free gallon of gas for every ten. In three months my investment in the filter will pay for itself.