Originally Posted by barry2345
I have increased my mileage by 4-6 miles per gallon, I installed a K&N cold air intake, E3 spark plugs, and I added a 3.5 inch rear most muffler removing the center muffler. This also gave me a horsepower increase of about 12-15.
what part number did you find the for E3 plugs? Right now I'm running the stock plugs but have the ground strip cut a bit away so that the middle of the electrode is open.