Well with svt header and fswerks stealth exhaust, cai, ford racing wires, and lack of a ac compressor it gave me a huge improvement in power, working on getting it dynoed to check numbers and as far as gas mileage my foot is always in it soooo i wouldn't really have a great estimate on that haha but it is a great tune for sure.. Do it!
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01 Greenie Zx3
02 Black Svt 3 door
16 Kona Blue Fiesta ST