1. Keep fluids toped off and changed regularly.2. Keep tires at proper air presure.3. Drive below 3,000 RPM.4. Take rotating weight off. 4a. Remove belts for PS and AC. 4b. Remove blancer belt. 4c. Get a lighter crank pully and/or flywheel5. Remove excess weight in the car. (Leave everything at home you do not need in the car. Like your girl/boyfriend.)6. Get lighter rims.7. Clean the EGR system!!!If you feel like spending more money you could do a short ram air intake and open the exhaust system a little(2 1/4")