Diesel Tuning

Reprogramming diesel engines for better fuel efficiency


More horsepower and torque does not necessarily mean more fuel efficiency," says Caterpillar's Coe. "There may be no gains seen in tank mileage if the operator chooses to use all of the extra horsepower and torque you have just given him or her.

"The whole vehicle and the operational characteristics over the vehicle's normal route need to be studied before making changes. Make no mistake, the driver has the final say when it comes to fuel efficiency. Do not underestimate the value of driver training."

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