We were asked recently asked "What does a Catalytic Converter do?" Welcome to Mercie J Auto Care, where compassion and craftsmanship come together. I’m Rick Smith, master certified technician. First of all, I want you to know

"What does ECU stand for?" I want to answer that question for you today. Welcome to Mercie J auto care. Where compassion and craftsmanship come together. I’m Rick Smith, master certified technician. ECU can stand for essentially two things.

Today I wanted to answer the question "What does EGR stand for?"

Now when we put fuel into the engine we actually mix it with air and the ratio is approximately 14 or 15 parts of air to one part of fuel. So in order for the computer to calculate how much fuel to put in,