Dont have those comparisons but here is a Mustang dyno vs a Dynopak.

Same car, same tune.

http://evoempire.org/index.php?/topi...40#entry170523

 

I love when we get comparison's like this. No one ever seems to get the difference between dynos

 

I compared Dyno Dynamics and MD at the same car. The DD reads lower than MD at about 10%. But DD reads with Rota test equally... The numbers from DynoPack were like Space shuttle power))). I prefer DD. If I have good numbers at DD with low CF, this car will bit everyone.

 

DynoDynamics i though read really high?

 

If properly used correctly but I have been on 2 of them which were all fudged..

 

Dyno Dynamics are the tool of choice here in the UK and we have Special "unwritten rules" if you want your graph to be believed or else it will get ripped to pieces.

User defined correction factors are not allowed

Must be run in Standard Shootout mode, Shoot_44 with all weather perameters displayed. Shoot_44 can not be manipulated it does not apply any correction value and it is a fixed ramp rate. It will run the same parameters as any other Dyno Dynamics any where in the world run in Standard Shootout mode (kinda the point)

Abmient and intake temps shown on graph must be within 10c of each other.

You have to use injector pick up for rpm, not just guess using the rev counter

The list goes on and there have been countless arguments over just what is acceptable on the MLR uk forum.

Here is an examlpe of a non-mivec 2.3ltr with FP Black on UK 99ron (US 93oct)

ATW HP and note all the weather info on the bottom.

It kinda difficult for me to work out your US power graphs but i generally guage to believe it or not compared to uk figures based on turbo, boost and fuel used as for the example shown an FP Black here is just the same as yours, just like 2.3ltrs and 93 oct fuel. How much boost and how it is delivered comes down to the tune and other parts involved. Which for me is where it gets interesting to compare. Some of what i see on here is well down right amazing!

 

This subject always makes me think of this Modified Mag compare. It's cool because it was done with the same car on different dynos around the NW

http://www.modified.com/tech/modp-09...n/dynojet.html

 

I personally don't care about the numbers I see on a screen or piece of paper. All I want is a smooth running fun to drive car. I trust what my tuner thinks is the best way to get the results I want. As long as the results from tuning and parts can be seen and compared to show gains, it doesn't really matter to me what the final numbers say. People are too hung up on what car x did on dyno y, rather then just enjoying their car. Track times are the only real way to compare numbers in my opinion.

 

I've tested between 5-10 setups between a factory calibrated MD and a DJ in SAE mode. EVERY single time I have noticed an 8.5 percent difference.

Edit: AMS also noted around 8% after changing their DJ to MD.

_________________________

Some people here aren't considering the correction factors. DJ can be SAE, STD and Uncorrected, MD can be weather corrected and tweaked

 

Was the MD 8% less then the DJ or was the DJ 8% more then the MD? Only one of them can be right.

 

I think the DD *you* tested was 10% lower. GST's Mustang and a local DD read almost spot on...

This is the problem with Dyno brand comparison...

 

You have to remember AMS's DJ read lower than 99% of dynojets out there. I would say the 13% number is more accurate.

 

Dynojets are supposed to be accurate to something like 1% of each other wherever in the world they are. I'm thinking the AMS #'s usually look lower because you usually see them in SAE corrected wheras an STD corrected chart would read a little higher. Uncorrected would be the truth but can be lower or higher than SAE/STD (77F/60F) depending on weather.

 

No it actually read low compared to other DJs. You can ask Chris, they never could figure it out really. I think it had to do with them converting the 2WD dyno to an AWD dyno, but it did read lower than other AWD DJs.

 

Of the three, it seems that Mustangs vary the most from shop to shop. The Mustang in my metro area only reads a couple percent lower than MAP's Dynojet. The DD on the other hand is 12-13% lower.