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  1. General 6.4L Discussion
    OK so my dad has a 2008 6.4 powerstroke, Super cab long bed with a Reading utility body, SRW. My dad is getting pissed because the truck constantly gets 11.2-11.8 mpgs. when he got it it got around 9-10 then we drilled about a dozen 3/4 holes in the air box cover with a hole saw and it went up...
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