Diesel World - - Contents - 317.286.3573 Flee­ceper­for­ FLEECE PER­FOR­MANCE EN­GI­NEER­ING

Le­git­i­mately im­pressed with the fit and fin­ish, per­for­mance pay­off and dura­bil­ity improve­ment pro­vided by Fleece Per­for­mance En­gi­neer­ing’s sec­ond-gen turbo swap kit in Part 1, we de­cided to part­ner with the In­di­ana-based com­pany again for Part 2 of this series. This time our ’12 Ram will be graced with an­other one of Fleece’s cut­ting-edge prod­ucts: the Powerflo in-tank lift pump mod­ule. De­signed as a di­rect re­place­ment for the fac­tory send­ing unit as­sem­bly—and with the goal of sup­port­ing higher horse­power while main­tain­ing quiet, air-free op­er­a­tion—the Powerflo lift pump is ground-break­ing on mul­ti­ple lev­els.

From a re­li­a­bil­ity stand­point, the pump’s ac­tive-fill tech­nol­ogy keeps air from in­fil­trat­ing the fuel sys­tem. From an op­er­a­tional stand­point, the in-tank de­sign makes it less au­di­ble than ex­ter­nal (chas­sis-mounted) lift pumps. From a per­for­mance stand­point, the sys­tem em­ploys two proven, Oem-style gero­tor pumps, which pro­vide a com­bined flow of nearly 170 gph at rated pres­sure— enough to sup­port 800 rwhp. And, from an in­stal­la­tion stand­point, there are no holes to drill in the tank, no fuel lines to run and no wires to splice. This in­stall is as easy as it gets.

While the fac­tory lift pump on our ’12 6.7L Cum­mins was keep­ing up with the stock in­jec­tors and CP3 just fine (de­spite us run­ning af­ter­mar­ket tun­ing ag­gres­sive enough to kill the 68RFE trans­mis­sion), we have set a goal of even­tu­ally match­ing the re­cently in­stalled S467 with a set of 100% over in­jec­tors and a stro­ker CP3.

So there was no time like the present to lay the ground­work for our fu­ture 750-rwhp en­deavor by in­stalling Fleece’s Powerflo lift pump. Af­ter less than three hours of la­bor, the Powerflo unit was in place and the truck’s low-pres­sure fuel sys­tem had ef­fec­tively been prepped for its pend­ing in­jec­tion sys­tem up­grades.

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