Dyno results, DynoJet vs. Mustang
#1
Registered User
Thread Starter
iTrader: (22)
Join Date: Aug 2004
Location: Evergreen, Colorado
Posts: 1,153
Likes: 0
Received 0 Likes
on
0 Posts
Dyno results, DynoJet vs. Mustang
These are my dynamometer test results from a Mustang then DynoJet dynos.
Alttitude is approximately same, air temp.+- 10 deg.F, humidity same.
91 oct. pump gas, no mod. or tune changes on 04' Z.
Mustang run from 12/14/05 Max #s Hp 436
DynoJet run from 2/25/05 Max #s Hp 429
I know #s are for tuning purposes, But... I was under the asumption that Dynojet #s are compairably "inflated" to Mustang.
Is this due to the operators set up?
Kevin
Alttitude is approximately same, air temp.+- 10 deg.F, humidity same.
91 oct. pump gas, no mod. or tune changes on 04' Z.
Mustang run from 12/14/05 Max #s Hp 436
DynoJet run from 2/25/05 Max #s Hp 429
I know #s are for tuning purposes, But... I was under the asumption that Dynojet #s are compairably "inflated" to Mustang.
Is this due to the operators set up?
Kevin
#4
Registered User
Thread Starter
iTrader: (22)
Join Date: Aug 2004
Location: Evergreen, Colorado
Posts: 1,153
Likes: 0
Received 0 Likes
on
0 Posts
Would this be in the correction factor of the Mustangs setings?
So, there is no "industry standard" per say on these setups, It's just how
much or little the operator wants to sandbag the customer?
Poo POO!!!
So, there is no "industry standard" per say on these setups, It's just how
much or little the operator wants to sandbag the customer?
Poo POO!!!
#5
New Member
iTrader: (51)
You forgot the most important factor..... barometric pressure. +/- 10F is a big difference.
Are these #'s corrected #'s?
This comparisson is completely unscientific and amounts to....... nothing worth comparing.
Thanks for an attempt at a comparisson. (Not trying to be sarchastic).
Respect
JET
Are these #'s corrected #'s?
This comparisson is completely unscientific and amounts to....... nothing worth comparing.
Thanks for an attempt at a comparisson. (Not trying to be sarchastic).
Respect
JET
Last edited by JETPILOT; 02-27-2006 at 07:30 PM.
#6
Sponsor
Forged Performance
Forged Performance
iTrader: (92)
the mustang dyno you were on was probably calibrated in attempt to emulate dynojet numbers.
Based on the numbers you posted, I am inclined to believe that the Mustang dyno has been adjusted to closely resemble a DJ number.
#7
Registered User
Thread Starter
iTrader: (22)
Join Date: Aug 2004
Location: Evergreen, Colorado
Posts: 1,153
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by Sharif@Forged
I agree. The challenge with comparing different dynos, is that the dyno operator will rarely indicate if they are adjusting their numbers to emulate an industry standard dynojet number. The local Mustang dyno in Charlotte is uncorrected, and gave me 327whp (this was a long time ago), and a couple days later on a DynoJet, I had 405whp'ish SAE corrected.
Based on the numbers you posted, I am inclined to believe that the Mustang dyno has been adjusted to closely resemble a DJ number.
Based on the numbers you posted, I am inclined to believe that the Mustang dyno has been adjusted to closely resemble a DJ number.
Trending Topics
#8
Sponsor
Forged Performance
Forged Performance
iTrader: (92)
Originally Posted by kevinapex
Are DynoJet # the industry standard Sharif?
#9
CJ Motorsports
iTrader: (21)
Nah i wont get worked up, cause you stated the facts. Dynojet is only the standard because of its abundance.
The most common Dynojet model 248 definatly is not very nice... I give it props only for repeatability, consistency, and lack of potential manipulation.
Otherwise, its not so great. Many other dynos far exceed its abilities to aid in tuning the car... including the new Dynojet 224xlc load dyno (Which also comes in AWD like a great chicagoland shop called AMS has).
The most common Dynojet model 248 definatly is not very nice... I give it props only for repeatability, consistency, and lack of potential manipulation.
Otherwise, its not so great. Many other dynos far exceed its abilities to aid in tuning the car... including the new Dynojet 224xlc load dyno (Which also comes in AWD like a great chicagoland shop called AMS has).
#10
Registered User
Thread Starter
iTrader: (22)
Join Date: Aug 2004
Location: Evergreen, Colorado
Posts: 1,153
Likes: 0
Received 0 Likes
on
0 Posts
lol...To tell the truth the hp #s realy don't hold much creditability to me but, I can be frustrating to spend money on mods. or tuning at your local dyno shop and have the hp/ tq gains come from the tuner tuning the machine rather then the parts or tuning yielding gains!
TRUST YOUR TECHS!!
TRUST YOUR TECHS!!
#11
Registered User
iTrader: (3)
Join Date: Jul 2003
Location: Escondido
Posts: 11,373
Likes: 0
Received 0 Likes
on
0 Posts
One of the easiest ways to manipulate a Mustang read out is to input a lower weight then the car actually is. Back in my Spec V days someone on that forum tested that. They inputed actual vehicle weight and got their "baseline" then inputted a weight that was several hundred pounds less. It under loaded the rollers and the dyno read almost 25 WHP higher.
#13
Registered User
iTrader: (3)
Join Date: Jul 2003
Location: Escondido
Posts: 11,373
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by kevinapex
So you need to "weigh in" to get an accurate base line before run on Mustang or does the Dyno give some weigh specs?
#14
Registered User
Thread Starter
iTrader: (22)
Join Date: Aug 2004
Location: Evergreen, Colorado
Posts: 1,153
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by MIAPLAYA
The dyno has no scale built in. It is relying on a reliable weight input by the operator to load the rollers correctly.
Thanks Kevin
#15
Registered User
iTrader: (3)
Join Date: Jul 2003
Location: Escondido
Posts: 11,373
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by kevinapex
So the operator has to change the stock gvw inputs based upon ALL mods, inc. fulid amounts, and enter these values every time you run?
Thanks Kevin
Thanks Kevin
#16
Registered User
iTrader: (18)
Join Date: Oct 2004
Location: .
Posts: 9,482
Likes: 0
Received 0 Likes
on
0 Posts
Bragging rights are subjective. The only real important use for a dyno is to see your gains on the same dyno in the same conditions and to assist in tuning. Comparing peak dyno numbers from seperate dynos is only chest beating that we are all guilty of from time to time. Besides, there is SO much more to a fast car than peak hp and tq numbers.
#18
Registered User
iTrader: (3)
Join Date: Jul 2003
Location: Escondido
Posts: 11,373
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by kevinapex
This all helps to understand, thanks.
An increased Butt dyno can mean more than a increased dyno #!!
An increased Butt dyno can mean more than a increased dyno #!!
#20
Didn't Go Cheap
iTrader: (25)
Kevin: The dyno is something that is very suggestive, IMO. That why I always suggest going back to the same dyno to see gain/loses. This article from Turbo Magazine: http://turbomagazine.com/tech/0306tur_dynodash/ shows the different between several of them. You can see that not every dyno will produce the same numbers.
Now... As far as Mac Autosport I highly suggest them! Nick has worked with the UTEC many of time on the Evo & STi apps. I have been to several meets/shops with my Z and when I had my Evo and people continue to talk about how much the love Mac Autosport.
Now... As far as Mac Autosport I highly suggest them! Nick has worked with the UTEC many of time on the Evo & STi apps. I have been to several meets/shops with my Z and when I had my Evo and people continue to talk about how much the love Mac Autosport.