Not sure which 2003 Ford Expedition Performance Chips & Programmers are right for you? We have over 1022 customer reviews, with an average rating of 4.5, to help you find exactly what you're looking for. Jack W from Fremont, CA said, "I was little unsure about this, but my friend has the earlier model and he likes and he is about to buy the latest version, so I did it. Man, it made some difference in terms of sound, unlimited supply of power, smoothness of gears shifting, I really like it. Gas mileage is better by about 2 miles per gal. I recommand this to others. By the way, I also have flowmaster and cold air intake installed, so you need to have all the right stuff to make it work right."
Year Range For Ford Expedition Performance Chips & Programmers