https://ssnperformance.com/4-e....xhaust-muffler-pipe-
The GT37 retains VGT functionality but sports a bigger turbine wheel and a larger, single compressor wheel. The aftermarket path typically points toward the use of a fixed geometry turbo, and namely one of the many popular off-the-shelf BorgWarner S300 or S400’s. These conventional style turbochargers are rock-solid reliable and, like the GT37, can support considerably more horsepower than the restrictive factory VGT on ’11-’14 engines. Since replacing the 6.4L Power Stroke, an
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