Dyno Dynamics to Dyno Jet comparison..
10-30-2007, 03:32 PM
#81
Originally Posted by Crom
Was going to try and find another DD around town to do another test..but they're pretty hard to track down. Stillen wouldn't do it because they only allow kits they install to be dyno'ed and was woried about liability issues.
10-30-2007, 04:23 PM
#83
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Originally Posted by Bullitproof
That was my car, i think. So, are you saying that 18psi greddy twins with cams wouldnt get you 500whp on a DD? not trying to be a smart*ss, just asking a question. anyway, i'll be heading to a local dynojet tomorrow to compare the dynapack numbers as compared to a dynojet. After that, i might even throw down on a dyno dynamics just to complete the trilogy
. i'll post up when i get back.
. i'll post up when i get back.I am not sure if it was your post or car I was talking about.....but the reason I was thanking Julian is because that was the kind of info/answers I have been looking for. And I was mentioning what had happened when I asked that question in a thread like this.
I could be wrong...but if I remember clearly...the car in question made over 600rwhp on a DynoPack running the same boost as me with less of a setup, but on a DJ I made over 550 and on the DD I made 501 @14psi. So like I said...Julian cleared it all up for me. Not that I could not get the answer from Sharif...
I am not knocking the car in question....I just wanted to know the difference between DD, DJ and DP.
10-30-2007, 05:02 PM
#84
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Originally Posted by XKR
Bullitproof....
I am not sure if it was your post or car I was talking about.....but the reason I was thanking Julian is because that was the kind of info/answers I have been looking for. And I was mentioning what had happened when I asked that question in a thread like this.
I could be wrong...but if I remember clearly...the car in question made over 600rwhp on a DynoPack running the same boost as me with less of a setup, but on a DJ I made over 550 and on the DD I made 501 @14psi. So like I said...Julian cleared it all up for me. Not that I could not get the answer from Sharif...
I am not knocking the car in question....I just wanted to know the difference between DD, DJ and DP.
I am not sure if it was your post or car I was talking about.....but the reason I was thanking Julian is because that was the kind of info/answers I have been looking for. And I was mentioning what had happened when I asked that question in a thread like this.
I could be wrong...but if I remember clearly...the car in question made over 600rwhp on a DynoPack running the same boost as me with less of a setup, but on a DJ I made over 550 and on the DD I made 501 @14psi. So like I said...Julian cleared it all up for me. Not that I could not get the answer from Sharif...
I am not knocking the car in question....I just wanted to know the difference between DD, DJ and DP.
10-30-2007, 05:08 PM
#85
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Nice post.
But, I still believe if you want to claim power figures that you can't simply apply percentage corrections because, as stated, no two dynos, conditions, and operators are alike. If you want to tune on a load based dyno, do it. If you want to make claims or post "dynojet numbers", then take $50 and run the car on a Dynojet.
But, I still believe if you want to claim power figures that you can't simply apply percentage corrections because, as stated, no two dynos, conditions, and operators are alike. If you want to tune on a load based dyno, do it. If you want to make claims or post "dynojet numbers", then take $50 and run the car on a Dynojet.
10-30-2007, 05:34 PM
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Originally Posted by XKR
Bullitproof....
I am not sure if it was your post or car I was talking about.....but the reason I was thanking Julian is because that was the kind of info/answers I have been looking for. And I was mentioning what had happened when I asked that question in a thread like this.
I could be wrong...but if I remember clearly...the car in question made over 600rwhp on a DynoPack running the same boost as me with less of a setup, but on a DJ I made over 550 and on the DD I made 501 @14psi. So like I said...Julian cleared it all up for me. Not that I could not get the answer from Sharif...
I am not knocking the car in question....I just wanted to know the difference between DD, DJ and DP.
I am not sure if it was your post or car I was talking about.....but the reason I was thanking Julian is because that was the kind of info/answers I have been looking for. And I was mentioning what had happened when I asked that question in a thread like this.
I could be wrong...but if I remember clearly...the car in question made over 600rwhp on a DynoPack running the same boost as me with less of a setup, but on a DJ I made over 550 and on the DD I made 501 @14psi. So like I said...Julian cleared it all up for me. Not that I could not get the answer from Sharif...
I am not knocking the car in question....I just wanted to know the difference between DD, DJ and DP.
Nah, that wasnt me. at 15psi, i'm at 550whp on the DP. when i head to the dyno tomorrow, i'm only doing 4 runs, so they will all be at 18psi. i'll just assume the 15psi number is 50whp less per my DP numbers. supposed to head up there by 2-3 oclock.
10-30-2007, 05:36 PM
#88
Originally Posted by Bullitproof
Nah, that wasnt me. at 15psi, i'm at 550whp on the DP. when i head to the dyno tomorrow, i'm only doing 4 runs, so they will all be at 18psi. i'll just assume the 15psi number is 50whp less per my DP numbers. supposed to head up there by 2-3 oclock.
10-30-2007, 05:40 PM
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I heard dynojets can be all over the place and i just wanted to get a good average. if i got one high number and then one low at the same boost level, i wouldnt feel comfortable just taking the higher number.
10-30-2007, 05:42 PM
#90
Take a few minutes between runs and they wont be all over the place. I did 3 back to back runs with maybe 1 minute in between and had close #'s! IMO the point of you going is to stop assuming what it would do on a DJ and see, if you dont do pulls at 15psi you wont know and still be assuming!
10-30-2007, 05:48 PM
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Originally Posted by Alberto
Take a few minutes between runs and they wont be all over the place. I did 3 back to back runs with maybe 1 minute in between and had close #'s! IMO the point of you going is to stop assuming what it would do on a DJ and see, if you dont do pulls at 15psi you wont know and still be assuming!
10-30-2007, 06:16 PM
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Originally Posted by Alberto
Whatever floats your boat man, you could end all assumptions on your end tomorrow but....
http://www.moto-one.com.au/performan...onfactors.html
Here's what a few of the correction factors mean and what they correct.
10-30-2007, 06:23 PM
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For DJ operators you have to understand what the correction factors are for and why you are correcting, I've seen people set their #s stuck to STD w/ smoothing at 5 and say "i dunno its just how it is". The truth is, it's a simple right click to change the correction factor and every DJ operator knows that STD is the highest read-out.
I honestly don't think that DJ's would be far off from DD if operators didnt correct everything.
Boosted cars create their own atmosphere, there's no need to start with a higher or lower base atmosphere. All numbers posted and shown should be UNCORRECTED, this is the true horsepower read out whether its 10-50 hp lower.
SAE, STD, DIN etc correction factors are for people in hotter, higher climates that will consistently read substantially lower, so what happened was they said "well we need to create a standard correction so anyone anywhere can apply it and have a similar read out". So when you take you're N/A car to your dyno when it's 8000ft above sea level you're not scratching your head as to why you're only making 200whp. The DJ operator can say hey well lets see what you would make at sea level, on a normal day, ok (applies SAE/STD Correction) here's 234whp backed by another 236whp.
I honestly don't think that DJ's would be far off from DD if operators didnt correct everything.
Boosted cars create their own atmosphere, there's no need to start with a higher or lower base atmosphere. All numbers posted and shown should be UNCORRECTED, this is the true horsepower read out whether its 10-50 hp lower.
SAE, STD, DIN etc correction factors are for people in hotter, higher climates that will consistently read substantially lower, so what happened was they said "well we need to create a standard correction so anyone anywhere can apply it and have a similar read out". So when you take you're N/A car to your dyno when it's 8000ft above sea level you're not scratching your head as to why you're only making 200whp. The DJ operator can say hey well lets see what you would make at sea level, on a normal day, ok (applies SAE/STD Correction) here's 234whp backed by another 236whp.
Last edited by IntenseFab; 10-30-2007 at 06:31 PM.
10-30-2007, 06:28 PM
#96
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Originally Posted by Alberto
So when I trap 130mph or more with 578whp Dynojet #'s you wont believe it?
10-30-2007, 06:35 PM
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Originally Posted by Alberto
LOL
9000rpm's limiter!? For now is only 7200rpm's...
9000rpm's limiter!? For now is only 7200rpm's...