ok.. i got a 93' 1.9L LX and It only has 65,000 miles on it. I was wondering when i should change the o2 sensors and change the fuel filter. I am roughly getting 30mpg in the city and would like to get more. would any fuel injector cleaner help? would a cold air intake help? header? i read alot about other peoples scorts and I want to get more mileage out of mine is all possible. thanks

ok.. i got a 93' 1.9L LX and It only has 65,000 miles on it. I was wondering when i should change the o2 sensors and change the fuel filter. I am roughly getting 30mpg in the city and would like to get more. would any fuel injector cleaner help? would a cold air intake help? header? i read alot about other peoples scorts and I want to get more mileage out of mine is all possible. thanks

partamerica.com and ford.com have service interval charts that show when you should check or replace items. Someone told me when you start adding performance mods (intake kits)your mileage goes down. As far as f/i cleaner goes I use them once in a while