I recently did a little test to see how close our Mustang load-bearing dyno replicates real street load.

The main reason I did this is that it is very vital that the load matches the street when tuning ecu-controlled boost as it is a load-target based system. If our dyno wasn't matching street load then all the tuning of the boost on the dyno would have to be redone or cleaned up again on the street after.

Both plots here are done in 3rd gear, one on the street, one on the dyno. The street plot only goes to 6750 as it was a bit busy on the street at the time and I like my current clean driving record.



The answer? Pretty damn close if you ask me.

 

Taken from Nasioc but none the less good:




Haha I posted that on our forums as well. I like the way you work Razor lol.


Mitch

 

Thats one reason we have a Mustang Dyno. No need for touch up tunes when we go to the track.

 

absolutely, the differences in two different road pitches could cause more difference than that

 

Where does a SuperFlo dyno fit into all this??

-E

 

Great Thread!! This is the reason Im gonna drive almost 2 hrs to a mustang then 1 hour to a dynojet to tune my car.

 

I also just saw this weekend that Dynojet Research released a load control udgrade to the 424x? Anybody else hear or know of anybody that has used one and how it compares?

 

I agree, we've done this also and had customers come in who logged and then logged on the dyno to see. Nobody has been disapointed. I owned a dildojet 2WD dyno for years...........sold it cheap to get the MD AWD.

 

Baahaha!



l8r)

 

SuperFlow does have loading ability, but nowhere near what Mustang's Road Load Simulation program can do....which is the program the OP is discussing.

Dynojet has had this out for about a year now. IT DOESN'T WORK!! The only thing they can do is a constant load (i.e. turn the Eddy Current on 50% of its maximum absorption) and a constant speed (i.e. hold the car at a steady speed).

It was the beginning of a beautiful friendship!

 

I think I know what the OP was discussing. I was asking where the superflow dyno ranked in this discussion. If it was closer to the dyno jet or if it was closer to the mustang dyno in terms of street load. I was tuned on a superflo and would hate to find out that my street tune is way off...

Cheers-
E

 

Mustang, Dyno Dynamics > Dildojet, DisneyPack

 

Ive used both kinds (roller and hub dyno) for a long time and when i finaly got to buy my own (the choice was abvious) i remember how the "oposition dyno-jet" from down under tried to sell me on the fact that high HP cars will slip on the rollers, it wont be as accurate bla bla ba.......

To date Ive had real high HP cars on the rollers and no sliping, and better yet the load replicated on the dyno is the same as on the road.....so i agree with the comment that there is little more to be dne on the road once your done.

Down side is that its not transportable given the whole thing weighs over 5500 punds.

 

Put a few potholes and road kill stuck on your rollers then it might be closer to road load. Measurement tool, not simulator

 

never mind !