Why does your car sound better when it's cold?

Have you ever wondered why your car sounds better when it’s cold? We’re referring to some high-performance models. As strange as it may seem, large engines usually produce a heavenly sound when they start up. The answer to this question is that the engine is running in the most inefficient way possible in order to reach the right temperature. The reasons have evolved over time, but the main idea remains the same.

Hagerty has produced a video that clears up the doubt. Ironically, although logic might make you think otherwise, the reason your car sounds this way is because the engine is at its worst when it’s cold. Internal combustion engines are designed to run when hot, so when they are cold, the fuel doesn’t burn well and there is much more internal resistance.

However, modern cars also have to worry about their catalytic converters. These need heat to work properly. The solution, therefore, is to run the engine less efficiently for a short period of time so that harmful emissions can be detected sooner. This is the case unless some thief has made off with your catalytic converter.

https://youtu.be/d2SAawnMNd0

Why does your car sound better when it’s cold?

The result of all this is that the newer models change their valve timing and ignition to deliberately create heat before returning to the engine’s normal mapping and running as efficiently as possible. The function is not completely different from the old throttle valve, but modern cars are much more advanced and do not have the same intervention as older models.

Either way, the result is a sweet greeting, only slightly poisonous, due to the increase in emissions, but we’re sure it will be worth listening to it for a little while. Shall we start?

https://youtu.be/sQ-tAt8y4K8