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cheap mods
I have a 99 F350 7.3 4x4. Iwas looking to see if i can find a list of mods that dont cost an arm and a leg. Just simple stuff you can do to up grade youre rig I have a full 4in turbo back and a k&n. Saw where you can take off the foil but not sure why. Stuff like that. You can boost the presures but not sure how much I dont want bad milage or black smoke all the time right know my truck smokes none.
THANK YOU
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