How to Cheaply Add Horsepower with an ECM Flash

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How to Determine the Proper Engine Rating

CAT ECM ReflashElectronic engines get a bad rap in the heavy duty diesel engine world due to the amount of issues that can go wrong with them. However, the good news is that if you have an electronic Caterpillar engine you can easily obtain more horsepower and torque via the ECM.

Re-rating an engine is an electronic process of powering up or down the default horsepower via the electronic control module (ECM). Re-rating a diesel engine is the easiest way to beef up an engine without digging into the hard internal parts. You can do modifications to the engine by changing out the pistons, injectors, the camshaft or damper. Adding an updated turbo is also another way to increase HP. However, these modifications are expensive and may not work as required which we will discuss later in this article.

To re-rate a CAT engine one must go to a CAT Dealer or Independent Certified CAT Distributor that has access to CAT ET (Electronic Technician) program. The CAT ET software will plug into the engine and get a diagnostic readout of the engine health. Once in CAT ET the ECM can be

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