Dynapack = CRAP

[Carter05xb]

Tests don’t lie:

Mustang dyno's require you to manually enter vehicle weight and environmental conditions. Therefore either inflating or deflating dyno numbers are possible. The real benefit to the Mustang type dynos are their ability to put a load on the car and as others have said, simulate real world driving conditions for tuning purposes.

Dynapacks are sort of the worst. But are extremely portable and assuming conditions don't change, should still provide you with accurate representations of power gains/losses. They require manual condition inputs, and cannot generate significant loads or simulate real driving conditions, so Dynapack and Mustang numbers often quite differ. Meaning Dynapack is unrealistic for real world numbers.

A Dynapack removes the tire issue by connecting directly to the hubs. This, again, is unrealistic because the tire acts as a moment arm, and going to a smaller tire will yield more torque at the ground. Since you test on a Dynapack with the wheels and tires are removed, you cannot measure the difference you get from one wheel/tire size to another. Also, you have eliminated rolling resistance from the equation.

A Mustang dyno seems to be the most technically accurate. It can apply a load to the rollers and simulate a real quarter mile run, or any other run you feel like programming into the thing. There is still the unrealistic contact patch issue, but it is my understanding that no other issues exist.

I also know that Mustang dynos yield the lowest numbers of the group, which doesn't do any good in terms of bragging rights, which is what we're all here for anyway, right?

Seems to me that if real world performance is your primary concern, you should get your horsepower tested on a Mustang dyno. If getting the highest numbers is your primary concern, you should get your horsepower tested on a Dynojet.

Dynapack's marketing focuses mostly on explaining how it's better than Dynojet, but they have very little to say about the Mustang dyno, which tells me that even Dynapack knows they have nothing on the Mustang system.

Look below at the two dynos produced by the same car. I look like hot shit from the dynapack but look like a chump on the MD500.

So for those of you using a Dynapack thinking your king. Think again. Anyone using a MD500 or 600 that puts down the same as you or close to you will destroy you on the street.

Numbers don’t lie.

304.9 Dynapack
266.00 MD500

Conditions for both pulls were as follows. 86 deg. And 2500 ft. above sea level.

Don’t want to hear someone wine about conditions.

[PETERPOOP]

You should know every dyno is different. They are all calibrated differently. I got less numbers on our local dynapack than I did on the local dynojet. I also read different numbers between the two dynojets I was on. Weather conditions weren't much different.

btw, seems like you're a little bitter about this topic.

[cali yaris]

which doesn't do any good in terms of bragging rights, which is what we're all here for anyway, right?

Nope. That must be another forum. :rolleyes:

[Carter05xb]

Not bitter. Just seen one to many people talking like they got great numbers and you come to find and see they use some cheap dynapack. That seems to be the local favorite of all wana be shops. Just seen to many other forums with guys acting like there all that and practicaly have the same set-up i'm using and produce unrealistic numbers. which is why I put up both sheets. I like to keep it real. Apples to apples. Don't tare off all your rotating mass and have no load to compare your results too. Even the guys at Dyanapack know they got nothing on the MD.

Just thought I'd come here and get away from the usual forums and spread the realistic version on the dyanapack.

[Carter05xb]

Everyone likes to brag when they get good results. look your doing it right now!

357 whp @ 24 psi on pump gas!
www.microimageonline.com

[cali yaris]

ok Mr 6 Posts, whatever you say. :laugh:

[KCALB SIRAY]

...what if I stuck a 24" fan in front of the car instead of a 32", would that make a difference?:iono:

[Carter05xb]

Ouch, did I strike a nerve? It's ok to brag a little about your numbers. I think my numbers are good, I don't have the highest hp 1nz-fe out there but I'm satisfied. So unless your that inflated guy who only uses the Dyanapack to test on this topic shouldn't offend you.

The guy that has the xa seems to be on the money with hp. Perhaps a little high on the dynojet but atleast his wheels are on.

I just seen your build is on microimage, Cali Yaris. Cool I'm gonna check it out.

[thebarber]

i thought everyone knew that mustang dynos gave lower #'s than dynapack or dynojet...?

[Carter05xb]

I know the MD produces lower numbers, however they're realistic. Which is what my point is. Running a dynapack is about as bad as getting a car from the dealer saying it has 500hp but it's to the crank. Which then turns into damn I only really have 375hp. That's all I'm saying. Keep it real.

[PETERPOOP]

Get over it, seriously. lol

[cali yaris]

^ yeah really. You can't compare one person's dyno to another, period. It's pointless.

To me, the number doesn't matter at all, the only thing I care about is numbers before and after a change I made, done on the same dyno.

I built my car to race it, not to have a number to advertise. It's not a dyno queen, like some other builds I know about. :wink:

[Carter05xb]

I was simply showing the differences between two. No reason to get so huffy. If I were trying to be mr. Cool I'd only show the dynapack dyno numbers. Just thought people should see the real difference. Now I see why your getting so defensive Cali, with your rmarks towards me. You dyno'd on a dynapack! You should still be in the high 200 to 300hp range on the MD. Either way you have a nice ride. Enjoy your rides guys, I am.

[cali yaris]

Thanks for showing the differences. You did that in the first post. So we're done right? :laugh:

[Carter05xb]

Of course we are. I proved my point between the two. If anyone should of been upset, it should of been me. But hey I now know the realistic road conditions vs. The not so real. I wasn't looking to have some lengthy debate over dynos. I got that in my hands already.

Movin on guys

looks like a few of you got nice rides here.

[Jason@SportsCar]

Dynapack is generating a flywheel power number, based on power measured at the hub.

Mustang and Dynojet provide power at the wheels.

Depending on the car (drive train layout) you can plug in a 10-15% loss (flywheel to the wheels) and both machines are right on the money.

Apples and oranges, but both get the job done. We have used all three models extensively over the years. I will take a Dynapack for tuning every time... It is way more sensitive and repeatable when making small changes - not as good as load cell dyno, but its also nice not having to pull the motor out. :wink:

Kind of a pointless rant. Wow, these two things are not alike. :iono:

[ilikerice]

AND now we are done.. hahaha

[KCALB SIRAY]

...what if I use hot air instead of cool air on a cold day?

[Shinare]

:barf:

[Steven Dionne]

By the way, a Dynamometer is a tuning tool. not a power calculator...

[cali yaris]

^ excellent way to word it.

[Carter05xb]

For those that asked if I was done, you sure like to keep it up. And for those of you that don't know the defenition of dynamometer here you go:

Dynamometer Basics
Dr. Horizon Gitano
University Science Malaysia

DYNAMOMETER OVERVIEW
A dynamometer is a load device which is generally used for measuring the
power output of an engine. Several kinds of dynamometers are common, some of them being referred to as “breaks” or “break dynamometers”.

Just for tuning???? :laugh: "Sucks to be wrong" I've done my homework on the comparison. The proof is in the dyno sheets.

Why are we getting so irritated? Whats the big deal? If you have erronous numbers from a dynapak like I do , get over it. I'd rather have the real load on the street power that is ture than not.

Obviously you guys can't let go on this so let's see the next comment.

[KCALB SIRAY]

http://www.cardiogirl.net/wp-content/uploads/2010/04/Norman-Fell.png

[YarisPR]

And Whats Wrong About Bragging??? :biggrin:

I Drive A 107whp (Mustang Dyno) 37MPG Yaris :laugh:

[cali yaris]

LOL @ kcalb... now where have I seen that before.... :biggrin:

[cali yaris]

How was the drive from Georgia to Kansas to do your dyno?

[KCALB SIRAY]

LOL @ kcalb... now where have I seen that before.... :biggrin:

:iono:....:biggrin:

[cdydjded]

By the way, a Dynamometer is a tuning tool. not a power calculator...

Its actually both. As a person who worked @ a shop with a Dynojet I can personally tell you that most people that came to my shop just wanted to know how much power their car made after some add ons. You dont have to tune a car when its on a dyno.....

[Carter05xb]

Don't quite get the old dudes face from some old ass tv show. And for you Cali, for someone who has a online store and mabey a shop you sure do act like an ass. Thank god there's a whole lot more places that sell parts cheaper than you, but then again they have alot more buying power. And for someone who has their own forum you spend alot of time on this one. I think I'd spend more time worring about my forum and business than some other forum which is clearly kicking your forums butt. As far as a trip to kansas to dyno, which is your way of saying, I don't belive your story. I moved with my girlfriend to Atlanta and just got settled in this past week. Go dyno your car on a real dyno than come on back with some real numbers. That's what this is boiling down to right now. Some sort of image your putting out. Glad I'm not one of your customers.

[sickpuppy1]

Well both tuning and power comments are right arent they? If your tuning the engine for peak efficiency you get more power and the dyno shows the results in HP gain, true? So using it as a tuning tool shows the HP gain for you efforts.
Or if you just wanna put a car on the dyno to see how much power it puts down is OK too. without making any changes.

[ilikerice]

^^i agree.. this thread is pretty pointless.. ive been on 3 separate dyno's... each throwing different numbers. dyno dynamics being the worse saying i had 114whp on a stock yaris.. after research those dyno's can be tampered with.. i didnt know at the time..

so i say dyno's are very pointless and are mainly used for tuning purposes...A dynamometer is a load device which is generally used for measuring the
power output of an engine...

so if you wanna compare numbers. get together with someone and get on the same dyno at the same shop and then you can feel each others balls and see who has bigger ones... then take it to a track and see who's power/weight ratio is better and who spent more money on tires

[KCALB SIRAY]

Don't quite get the old dudes face from some old ass tv show. And for you Cali, for someone who has a online store and mabey a shop you sure do act like an ass. Thank god there's a whole lot more places that sell parts cheaper than you, but then again they have alot more buying power. And for someone who has their own forum you spend alot of time on this one. I think I'd spend more time worring about my forum and business than some other forum which is clearly kicking your forums butt. As far as a trip to kansas to dyno, which is your way of saying, I don't belive your story. I moved with my girlfriend to Atlanta and just got settled in this past week. Go dyno your car on a real dyno than come on back with some real numbers. That's what this is boiling down to right now. Some sort of image your putting out. Glad I'm not one of your customers.

http://www.survivinggrady.com/roper.jpg

[Carter05xb]

For what you guys say is a pointless topic, you sure have alot to say. But hey since you likerice so much I'll put some on my balls and you can come lick it off. Even after I put upthe definition of dynameter you still can't get it through your thick skull. Bunch of winey asses. The only one so far with common sense was the CDydjdad dude. Most of you are just plain rude. Sorry if your butt hurt about your non producing rides. Get off the dynapack and spend some money and hop on a real dyno.

[cali yaris]

Go dyno your car on a real dyno than come on back with some real numbers.

They'll still be higher than yours. But I'm not bragging, really. :laugh:

[ilikerice]

i was just about to say.. "im having some serious deja vu".. is that really xbgod?

[Tylermayer]

i love yarisworld fights <3

[KCALB SIRAY]

http://dubsism.files.wordpress.com/2010/04/lesbian-punch-in-face.jpg?w=510&h=382

[cdydjded]

24427 YW members

201+ WHP 3
100WHP-200WHP +/- 10
less than 99WHP 24414

Honestly who cares what freaking dyno you use.

[Yoda]

FALCON.........PUUUUUuuuuuuuuuuNCH!!!!!!!!!!!!!!!! !!!

[PETERPOOP]

Girls fighting is so awkward.

[Yoda]

Yo Where is that vid of your turbo? Make one like the one you made for the SC. That was cool...

[Focus_Sh1ft]

24427 YW members

201+ WHP 3
100WHP-200WHP +/- 10
less than 99WHP 24414


This was, by far, the most interesting stat in this thread. :laugh:

[PETERPOOP]

Yo Where is that vid of your turbo? Make one like the one you made for the SC. That was cool...

hey man. i am trying to get a clear sunny weekend to shoot that thing. i also am in need of making or having custom music for the soundtrack be made. i can't make any money off the video on youtube if it contains copyrighted music.

[cdydjded]

This was, by far, the most interesting stat in this thread. :laugh:

Thanks:thumbup:

[scioncrew]

dyno's are just tools for tuning cars. just so happens they give you a HP and Tq number to be happy about. the real bragging rights is when you go to the track and bit up on some domestic car guys. take it to the track and show you accomplishments. congrate on the dyno numbers. :thumbup: how much boost was that?

[cali yaris]

^ It was the same guy who got banned before, showing his previous build.

[scioncrew]

^^LOL i dont think he likes you..

[cali yaris]

^ He definitely won't after you work on my car some more and we tune again. :biggrin:

[KCALB SIRAY]

I think he likes Norman Fell

[scioncrew]

http://dubsism.files.wordpress.com/2010/04/lesbian-punch-in-face.jpg?w=510&h=382

i think she felt that one...lol:bellyroll:

[YarisPR]

^ He definitely won't after you work on my car some more and we tune again. :biggrin:

But don't brag if u get better numbers... He might create another account and another thread "Dynapack/Garm/Bragging sucks" :bellyroll: :bellyroll: :bellyroll:

[cali yaris]

Garm = CRAP

[PETERPOOP]

Cool Reserved And Pimp

[cdydjded]

C=Cant
R=Really
A=Add
P=Power

[Focus_Sh1ft]

Garm = CRAP

LMAO.

Also expect: Garm "NOT SO NACHO"

:laugh: