Horsepower is useless if you can't get it to the pavement. As a result, traction control and differentials are fitted to your car to control how an engine's output is transferred to the road, helping to make the most of whatever power is on tap. This video from Team O'Neil explains how they work. The differential controls the split of power...
Full ArticleHere's how traction control and differentials work to give your car grip
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