Mustang vs Dynojet?

[gnturboray]

Never really gave it much thought between the two systems other than the Mustang rates lower. Which of the two systems gives more of a true rendition of the max power/torque ratings and why? And for the search Nazi's, I did a search and nada! Then again my search techniques have not been perfected.

[daveagogo1]

Mustang gives better real world numbers due to how it puts the load on the car VS most Dynojets. Just keep in mind it is super easy for any shop to make them say whatever they want as far as numbers go. Mustang dyno needs a more skilled operator IMO.

[Supermaro585HP]

Mustang is better for tuning. Dynojet will give you higher numbers.. I can't wait to see how this thread goes..

[litle88]

My buddy at Straightline wrote this a few years back and he has been tuning for many many years. It's a good read enjoy

http://ls1tech.com/forums/11468376-post12.html

[SGOS252382]

Mustang dynos are known as "heart breakers" for their low readings.

My LS1 Fbody made 360s rwhp on a Mustang Dyno and over 400 rwhp on a Dyno Jet. Usually the difference isn't so great, but it can be depending on the dynos used.

At the time, I didn't know about Mustang Dynos. I was pissed off by my lower dyno numbers until someone told me Mustang Dynos are known as "heart breakers." That's why I had my car re-dynoed on a Dyno Jet.

[gnturboray]

Originally Posted by litle88

My buddy at Straightline wrote this a few years back and he has been tuning for many many years. It's a good read enjoy

http://ls1tech.com/forums/11468376-post12.html

This article explained everything I wanted to know!! Great read!

[wnt2gofst]

I made 706whp on a dynojet here in GA on my 20's. A little more on my drag setup in TX on one. Made 618whp on a Mustang dyno in tx know to read about 14% lower then dynojets.

Dyno numbers are great. But want to see if true take it to the track. With new power I should be able to click off a 9 sec pass.. we shall see.

from the famous tapatalk

[gnturboray]

Originally Posted by wnt2gofst

I made 706whp on a dynojet here in GA on my 20's. A little more on my drag setup in TX on one. Made 618whp on a Mustang dyno in tx know to read about 14% lower then dynojets.

Dyno numbers are great. But want to see if true take it to the track. With new power I should be able to click off a 9 sec pass.. we shall see.

from the famous tapatalk

That's a huge decrease! From what I've read it should only be a 6-8% difference.

[TXM62SS]

Originally Posted by litle88

My buddy at Straightline wrote this a few years back and he has been tuning for many many years. It's a good read enjoy

http://ls1tech.com/forums/11468376-post12.html

Good read for sure. Thanks 88!

[wnt2gofst]

Originally Posted by gnturboray

That's a huge decrease! From what I've read it should only be a 6-8% difference.

Ya, every car has been this way on this Mustang dyno. I know a c6z with a 440 lsx that made 565whp on it and on at lmr and another shop dynojet made right around 640whp. Buddies ls3 418 fbody 497 on it and 560- 570 on several dynojets.

Is what it is though.

from the famous tapatalk

[Pro Stock John]

Interesting.

I made 454-463rwhp on a mustang dyno the other day.

[B5254T4]

I´ve had both and the Dynojet match the stock car hp better. All stock cars have less power than the manufacturer say or they are correct, that´s the difference between Mustang and Dynojet. The BMW M3 V8 show low numbers in the Dynojet too but that´s one car that always perform bad stock. Can´t say what´s right, the low or high numbers, you always test the difference before and after.

Other than that the Dynojet looks better in welds and stuff around it, never any problems so I want to keep the Dynojet. A really good dyno.

[christianchevell]

Mustangs are brake load dynos that simulate real world conditions by slowing the rollers and are more useful for tuning that are inertia but may be full of water for the braking effect. Dyno jets are usually just inertia dynos that have no braking effect yet I think they may have developed that over time with newer models..... Thus why mustang dynos usually read lower and better simulate road conditions and are better for tuning as they can do more with loading the dyno for resistance....rolling resistance. Of course taking into account the operator having to input various things like temperature , humidity and altitude and a correction factor,( correction factors should usually be very low in terms to correct for the atmosphere etc not like 30 more like 5 -6 etc) ...... along with their being different readings coming on the sheet: standards such as SAE which is what is real, versus STD etc... which just means society of automotive engineers versus standard which just inflates the numbers a lot..... Also data smoothing can make a dyno sheet not show what the car is really doing with its power production and where it stumbles. A good dyno sheet should show the AFR also as the air to fuel ratio is pretty critical not to jump all over the place or be way to lean or too rich.

To show you a good example here is my dyno sheet from my professional tuners Mustang dyno who is BTW an electrical engineer and a chevy motor head for life. This is after install of headers and TSP top of the line cam along with a CAI. I have dual mode exhaust and electric power steering on the 2013 ss.



Note my correction number is low at 6 for the factor and the day was I think about 65 degrees and maybe rainy and a little above sea level and the tuning was professionally done with h.p. tuning, ( taking examples to copy and paste in the program from a library of past tunes to help in making my custom AFR tables and such in the tune then adjusting AFR tables from there while on the dyno running at various speeds and from data logging), along with eliminating all or most of torque management and other nice system tweek things that can be done with a tune the $500 cost is worth it if you get a real professional tune as its dyno tuned and road tested etc..... Good luck. This is just the print out of the final dyno run not making others to compare as its what the final product is, not a before and after, or in progress comparison and the tuner is the person who evaluates the data and changes things to get it to the point where it is optimal in performance and the spark curve is just right and the AFR is just right and etc..... to get it to the point where it is a finished tune. A good tuner should be able to do back to back to back dyno runs and have almost exactly the same numbers unless changes are made to the car, or you go to a different dyno say especially one that is not a load dyno.

[Scuzz]

On my previous setup. My mustang dyno was within 10hp of my dyno jet dyno.