Dyno Jet vs. Mustang Dyno

Not sure if anyone answered this, but this is the MAIN thing when it comes to deciding which dyno to use. If you want to have your car tuned then the mustang dyno is definatly the one you want since it simulates the coorect load your ca would have when driving down the highway. If you want to just test your HP and compare it with others the a dynojet is W/O a doubt your best bet, as it loads EVERY car exactly the same and it allows a true comparison between 2 different cars. The mustang dynos results on say an 02SS vs an 04 GTO will be VERY different due to it loading the car to EACH cars own weight. Now 2 mustangs like 2GTs it would work pretty good for a comparo but a S/Cd GT vs a stock 03 cobra wouldnt due to a big weight difference. Hope that helps, and BTW when I dyno mine it will be on a dyno jet as its not going to get tuned.

UDTBadkarma said:

Ok so let me get this right:

- Dyno jet = just check ur power and numbers ur car is putting down

- Mustang Dyno = used to tune your car.

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yep.

Although having numbers from a dyno jet is pretty meaningless for how fast a car is. Because different cars will have different loads, so using a dyno that treats them the same is like getting a Strong Man competitor and a 5 year old kid to have a strength contest by lifting a football.

Both can pick it up so does that mean the kid is as strong as the Strong Man competitor?

As an example I know of a car that would only dyno 190-200rwhp on a dyno jet but in totally stock trim is capable of very low 11 ET's. The car only has a 1.8 n/a 4 cylinder engine with 230bhp crank, but it weighs less than 500kg (1100lbs) so carries a power to weight ratio of 500bhp/ton. To get a Mustang GT to have the same power to weight it would need in excess of 800bhp crank.


This car can out perform a Ferrari Enzo from 0-100mph-0

300bhp/ton said:

yep.

Although having numbers from a dyno jet is pretty meaningless for how fast a car is.

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True, but how many of us want to run 1/4-mile races on the dyno? I think the vast majority are simply interested in the power available at the wheels, especially before and after a mod, and will prove out how fast the car is at other venues like drag strips.

The drag strip does not offer the consistency of the dyno for proving the gains or losses offered by a modification, especially mods that return modest power increases. There are way too many variables at play to determine the true gains or losses in actualy power to the wheels. As well, the dyno can offer consistency for tuning at known loads and speeds that is also not really available at the strip.

Conversely, the dyno is no place to try to mimic a 1/4-mile dash because no matter how much you fudge the numbers and simulate this, that or the other, you'll never replicate the nuances of the real world.

Because different cars will have different loads, so using a dyno that treats them the same is like getting a Strong Man competitor and a 5 year old kid to have a strength contest by lifting a football.

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It depends on what you're after. For knowing the power at the wheels or tuning for lean-best-torque it doesn't really matter if an 800wHP Cobra is followed on the Dynojet or MD rollers by a 200wHP Lotus Seven. Each simply returns what it does...the reality - mass, weight distribution, tire size, aero, rolling resistance, power and all that plays out naturally at the track.



Love that car.