Can You Reprogram A Used ECU?

The Electronic Control Unit (ECU, aka Engine Control Module or ECM) manages just about every aspect of your engine. You are most likely reading this because your ECU is either faulty or has failed completely. And as you might have already found out, a broken ECU can leave you stranded by the roadside.

What you may not know is that every car has a unique ECU. So, the next question is can you reprogram another ECU to work with your car? The short answer is yes. But there are some important things to know before buying a replacement part.
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