Contour Enthusiasts Group Archives Forums Branches Eastern Canada Improving the fuel economy of the 2.5L Duratec

I have an MSD ignition coil,8mm wires,god knows how old spark plugs,stock intake,removed resonator and a 'performance' muffler (read: fart can) and I got 625km out of my Zetec last week,with the needle just under the quarter mark.

My Duratec had a cone filter,9mm wires,removed resonator and a 2.5" SVT-style exhaust with no mufflers. I was also cheap and would usually fill up around a half tank,but if I ran it down I got well over 500.