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Message: [QUOTE="Monster Stroke, post: 372909, member: 6190"] Ok so the family business bought a fully loaded cab and chassis F-550. It SUCKS!! It has ZERO balls and barely pulls 25k lbs at like 70... all while getting 4.2 MPGS!!!! Does anybody else have this problem? I know the cab and chassis trucks are detuned in comparrison to the regular 6.7's and that they only have the single turbo vs the dual one... but holy crap! Is this normal? Also, now that my dad actually drove it he realized how much it sucks and has asked me to figure out if its the norm. And if so would doing the full DPF/Urea delete and some tuning actually help anything? He really wanted to keep it stock for warranty reasons but if it's gonna be like this he'd rather open it up. Thanks for any help!! [/QUOTE]

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