’11-17 6.7L POWER STROKE

Diesel World - - Buyer's Guide -

MAX HORSEPOWER: 460-500 HP (’11-14), 540-560 HP (’15-17) TUN­ING: SCT OR MCC

Due to the re­stric­tive Gar­rett GT32 SST turbo chok­ing off air­flow and lim­it­ing high-rpm po­ten­tial on the ’11-14 6.7L Power Stroke, you’ll be hard-pressed to break the 500hp bar­rier—and most early 6.7L-pow­ered Fords live in the mid 400s. As for the ’15-and-newer Power Strokes, the less-re­stric­tive Gar­rett GT37 turbo and higher-flow­ing CP4.2 in­jec­tion pump paved the way for tuners to push the late-model Super Duty well into the mid500hp range.

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