i searched this but couldn't find anything........i know all dyno's read differently and some general read higher than others.......but which ones read the highest and which ones read the lowest...like for example does a mustang read higher than a dyno dynamics and lower than a dyno jet?.............i'm just curious how they all match up

 

Warning, you are about to get flamed baaaaaaaaaaaad

but.

Generally dyno Jets are the standard "accepted" by most

dynapack, DD, and mustang generally read lower. There are way too many variables though.

People will tell you dynapack, dd, and mustang you just configure and get whatever numbers you want. Well you can do the same thing with dynojets (just change the weather station settings).

Here's how I look at it. The dyno is a tool. I rather measure the power changes I see based on changes I make in the setup. The ultimate number doesn't mean that much.

tom

 

There are only these factors that are important when measuring power ...

1. Baseline numbers vs numbers after mods (on the same dyno only - if you change dyno's it's a moot measurement).
2. ET and trap in the 1/4. That's really the best way to measure how powerful your car is.

Beyond that, it's a dick waving contest. But I'm happy to display my numbers in my sig anyway.

 

Read this ... ignore the flames and you'll find some very useful technical information about load based and inertia based dynometers.

https://my350z.com/forum/forced-indu...t=dynodynamics

And do a better search, there's about 128732098713248979823 threads on this topic already.

 

yeah it's cool........i was really just wondering because i did know how dynapack and mustang read compared to others.........thankyou for the responses

 

As far as I can tell, everyone has a different opinion. Not only that, you can put a car on a dyno one day and get one measurement, then put the exact same car on the exact same dyno the next day and get a different measurement. The only way to get a true comparison is to put the dynos side by side in a controlled temperature and humidity environment and with a controlled power source, which I have not seen done.

Search Google (e.g. dyno A vs dyno B). I found quite a few threads discussing differences in dynos, as well as other very informative information. Once you read enough threads, you'll probably form your own opinion. I remember a thread in one of the Corvette forums that gave a very detailed break down of the differences between the different dynos and expected results. I don't remember exactly in which forum it was, but perhaps you'll come accross it in your search.

 

There is a reason that they all have Dynojet corrections. Dynojet is and will be the industry standard.


IBTL !!

 

Mustang = I wish my tuner had a real dyno

DJ = Wow look at all that power and that nice curve ( smoothing set on 5)

DD = What do you mean that's all its got?!?!?!

It seems that based on how the settings on any individual dyno are set up (weather, elevation, smoothing, gear selection, traction, fans) you can vary greatly in your horsepower #, IMHO.


Agreed that DJ is considered the industry standard though .

 

yes but the only way to properly tune is by a load based dyno, like a DD.

 

So true

 

IBTL.. waiting on you know who to respond....wait for it..

 

You mean Dr Doug He is in charge if the Stillen SC section....not the dyno section

 

you can get a DynoJet with load control..............they have one at national speed

 

Seems every one that dyno's and tunes on a load based dyno.....thinks that , that dyno type is the lowest reading dyno .

But what seems to work real well is a whp calculator . Using your cars real wt. and trap speed

 

i agree, last time i played with one of those it was like within 15whp

 

Yup, assuming traction of course......I will use SP's as a perfect example.....

Car weighs 3428 (as per pic on website) with chris behind the wheel.

Car trapped 158mph

Car dyno'd at 1033rwhp.

ET calculator show that 3428lbs and 158mph = 1055rwhp

not too bad on accuracy

tom

 

^--- on what dyno?

 

Mustang Dyno ("calibrated to read like dynojet")

tom

 

Thom just FYI there is no way to change dynojet readings. You can only select from sae, std, din, and one or two more standards for environmental corrections and that is all. If you wanted to try really hard to falsify readings you would need to put the weather station in an oven... But evev then it says the temp right on the graph unless they turn it off... Not worth the work

 

what if dyno's where calibrated and software was based off of a yamaha v-max?