Ford Focus Forum, Ford Focus ST Forum - View Single Post - Basic Bolt ons: Exhaust Headers/Flex Pipes
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Old 07-18-2012, 10:50 AM   #145
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More about the exhaust/ O2 questions

Yup yup u need the exhaust done first . The "tune" is actually a Re programer. They range from 317.00 -375.00 depending where u get and you'll need 3 programs Basic, fuel economy , and Performance. And depending where u go a good shop will sell thosr for 8/ bucks a pop. Soo your already looking at 600 for computer to do the aftermarket stuff
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