We've already shown you that a Tesla Model S will smoke the new BMW M5 in a drag race, and that's no small feat. It should also come as no surprise. Say what you want about Tesla or their long-term viability as a company, there's no question that their cars are fast.

The folks over at iND Distribution took their stock 2013 BMW M5 and ran it on the dyno. It put down 527 horsepower at the wheels.

Thanks to those last few millions of barrels of oil you can finally buy that tuned SLS you've had your eye on. Time to take it to the dyno, and why not sit in the trunk as it shoots flames?

John Hennessey isn't known for being the shy and retiring type. Still, suggesting that the company widely accepted as the maker of the fastest production cars in the world apply lips to posterior is a bit on the bold side. How do you get the cojones to do so? Oh, by putting 1,200 HP in a stretched Elise, then…

A dynamometer, or "dyno" as they're called by you and I, is a device for measuring force, moment of force (torque), or power. In the automotive world, they're used to precisely calculate the power produced by a vehicle's engine at the wheels. A stand-alone dyno setup can cost more than $50,000. Here's how some guys…

It's easy to toss around horsepower figures; It's quite another to conceive of how much power is actually behind such figures. Like when this massive V8 blows up with the force of 850 ponies.

It's not uncommon to see high-power vehicles throw a little flame out the rear while dyno testing. When the 1,200-hp Hennessey Venom GT gets on the dyno, it's not uncommon to see an afterburner.

It's one thing when an engine gives up during a dyno test; quite another when the whole car tries to jump down. These Puerto Rico students have a little more to learn about strapping all-wheel-drive vehicles down for tests.

This 2008 Ford Mustang Shelby GT500 was the beneficiary of several upgrades that boosted it to nearly 800 horsepower — until the engine decided to experiment with external combustion. Dynomite!

You hear a lot of guys bragging about their cars' mighty power output, claiming 500 horses at the wheels and so on, but how many actually roll up to a real-world dynamometer test? Armand did!