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JJackflash
I have 2 performance boxes in my Dodge. One reprograms the ECM and the other is a box which raises the fuel pressure. I never did notice an increase in fuel mileage with pressure box but I have with the reprogrammer. I can use them both together and I really show large gains in performance. My other thought is I wonder why a guy cannot post a question on this forum without catching all these comments about warrantys. I think most guys already know this after reading all the anti- performance mods to your truck here. There are some of us out here who some might call stupid for doing it but it is our choice and not all of us have the new higher HP trucks. Personally myself I have run everything from big Semi's to pick-ups with turned up motors in them and they do just fine if you use a little common sense. Al
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