Not much you can do to a 2.5. You can do wheels lower the car and change the exhaust. That's about it. Change the trans and coolant fluids every 30K use ford fluids only.
Never flush trans just drain and fill.
A forum community dedicated to Ford Fusion and all Ford vehicle owners and enthusiasts. Come join the discussion about performance, modifications, classifieds, troubleshooting, maintenance for the Focus, Fiesta, Taurus, Mustang and more!