ELi5: How does tweaking computer increase car specs?

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I often watched the grand tour and Richard Hammond does it, to increase the car specs. How does that work? I know mechanics do it. But surely the manufacturer would put it on highest specs anyway? Or not?

In: Engineering

5 Answers

Anonymous 0 Comments

The manufacturer is more interested in hitting the specs that the largest number of customers are interested in, and meeting government regulations, not necessarily the best racetrack performance.

Richard Hammond probably cares a lot more about speed and acceleration than he does about fuel efficiency and EPA/(whatever the British environmental agency is) emissions limits.

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