One of the most interesting features of the 6.7 Cummins engine is its highly upgradable nature, making it a playground for enthusiasts who want to boost horsepower, improve fuel efficiency ...

The amount of horsepower and torque delivered by a stock 6.7L Cummins diesel engine depends on when it was released. The earliest versions of the 6.7 Cummins diesel, introduced around the middle ...

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