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Re: Audi RS4 Abt - No speed limiter. - 03-03-2006, 01:57 PM

Murcelago has a 0.33 drag coefficient.

Audi RS4 has a 0.30 drag coefficient.

Quote:
Let's say we want to increase the top speed of a car by 10% - how much extra power do we need? Increase in power required is related to increase in speed cubed - i.e. to 1.10 cubed = 1.33. So we need about 33% extra power to achieve 10% increase in top speed. Copyright David Baker and Puma Race Engines

Alternatively let's say we tune an engine and achieve 10% extra power - how much will top speed go up by?. Speed is proportional to the cube root of power - i.e. to the cube root of 1.10 = 1.03. So speed will only increase by about 3%.
How top speed and power are related.

Basic car aerodynamics.
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