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  • Walk ·
    Hello again, I have installed a H&S Mini Maxx tune on my 09 F-250 6.4, CCSB. I have downloaded the program and now in the process of changing out the exhaust with an AFE down pipe back sysytem. my question is, I'm not sure where to set my defueling at. I have the tune set at street tune which is a +80 horsepower. any help will be appreciated.
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