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Your Mustang’s Dyno Numbers Don’t Mean Jack

By - October 24, 2017

While a dyno run can accurately estimate your Mustang’s horsepower and torque figures, you shouldn’t bet on them.

“Yeah, dawg,” is typically what someone says before sharing how much power their ride “threw down” on the dyno. You know what we’re talking about: The endless bragging rights that a dyno sheet generates amongst enthusiasts. Sadly, these figures aren’t always all they’re hyped up to be.

2018 Ford Mustang GT

If you’ve taken, or plan on taking your pony car to a shop with a dynamometer, there are a few questions you should ask. For starters, what kind of dynamometer is it? How is it calibrated? Which exact variables will it measure?

As this video by Engineering Explained shows, there’s more to dyno runs than simply “strapping on your ride and letting it go for a spin.” Host Jason Fenske even uses his AP1 Honda S2000 as a guinea pig for this dyno-readings research.

Like most of Fenske’s videos, you’ll hear some big and confusing words being thrown around. But for the most part, it’s pretty easy to follow. In summary, a MustangDyne dyno (a brand of dynamometer) typically obtains different horsepower and torque readings than a Dynojet dyno (another brand). The main reason for this variance is that the MustangDyne takes into consideration the vehicle’s weight and slipstream. The Dynojet does not.

 

ALSO SEE: Ford Mustang’s Evolution: Watch a Quick Breakdown

 

As you’ll see in Fenske’s horsepower and torque chart, the three MustangDyne runs seem to deliver consistent results, while a simulated Dynojet (by using a parasitic multiplier) returns a wildly different horsepower reading. If none of this is making any sense to you, we don’t blame you. Perhaps you should just watch the video and hear it from the horse’s mouth.
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