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Old Jul 13, 2008 | 08:24 AM
  #46  
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Originally Posted by scorke
David's dyno reads high compared to most MD's.

If it didnt then it wouldnt read within 5 percent of Switzers dynojet, not to start a dyno comparison just stating facts.

Some cars that have traveled away from Buschurs MD to dyno on other MD's have reported lower numbers....

Scorke
Originally Posted by Warrtalon
But in the past there were 13-17% differences. That's why I asked if something recently changed. When cars put down 407whp and trap 125, it's hard to say it reads high when 407 on a Dynojet will get you 118-119 (assuming normal weight on both).
Can you guys make a new thread, rather than derailing this one? Call it "Buschur MD bickering thread" or something.
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Old Jul 13, 2008 | 08:26 AM
  #47  
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Not bickering - just clarifying. The dyno issue is still not resolved as noted by Voidhawk's last post. There needs to be a standard or agreed-upon middle ground.
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Old Jul 13, 2008 | 08:26 AM
  #48  
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Originally Posted by Warrtalon
Say what?? It has read WAYYYY lower than almost any other dyno for a few years now. Did that change recently or something?
Originally Posted by 9sec9
I think Davids car was even closer than that on Switzer's dyno. My own observation is if the numbers are that close, then you would assume that another car making reasonably the same numbers on another Dynojet would run in the same ballpark as far as et/mph. It never happens. I think Switzer numbers, for whatever reason seem to be closer to Davids dyno than other Dynojets. I know, I know, subjective. Moving on.

The heat was a major factor today. Even Trents car was down 37 whp today on David's dyno. The heat, 111 degrees intake, and the humidity, had to be 80%+, would make a lot of difference in todays numbers vs even an average day. With what we've learned, the car could have as much as 20-25 whp left in it. On a good day, it should make 565-570 on the Buschur Racing Dyno.




Same car, same tune, same octane, same boost. Warrtalon, take from this whatever you want

Scorke
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Old Jul 13, 2008 | 08:27 AM
  #49  
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Originally Posted by EVO8LTW
Can you guys make a new thread, rather than derailing this one? Call it "Buschur MD bickering thread" or something.
We are not bickering at all! If your bolting on a turbo to your car its important to know if the data regarding how much power your likely to make will, or should differ from what people post up on evom.

If I wanted an FP Red and put it on my car and made 50 whp more/less than I was expecting I would be very happy or very sad depending in which way it goes, I know this is an exaggeration but still, knowing what apples and oranges your dealing with is half the battle online.

Scorke
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Old Jul 13, 2008 | 08:33 AM
  #50  
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What I take from it is that curves are quite different with the Dynojet torque curve being pushed to the right. You know that the farther to the right you can maintain torque, the higher the peak WHP will be.

These two have much different peak hp and peak tq numbers with the 8k rpm power being much different between the two as well. I do not know why they are so different, but this is certainly not typical compared to what I've seen in the past. My only guess is the curve differences are from load-bearing vs non.

Another thing is that dyno differences are not based on a percentage as power increases but closer to a static difference. Here, we're looking at a 34whp difference, but that's still lower than previous ones I've seen.
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Old Jul 13, 2008 | 08:37 AM
  #51  
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Originally Posted by Warrtalon
What I take from it is that curves are quite different with the Dynojet torque curve being pushed to the right. You know that the farther to the right you can maintain torque, the higher the peak WHP will be.
The curves are dramatically different I agree, the Dynojet records much higher tq numbers and much earlier as you said. Again what must be said for testing one dyno and another is that none are correct, all are imperfect ways of trying to replicate what sort of load the car sees whilst on the road, none of them can replicate it exactly untill we see one thats in a wind tunnel, with a moving floor The numbers from any dyno can be used to compare to other results from the same dyno, same car..... otherwise your just trying to compare two things with too many different variables, this you know.

Originally Posted by Warrtalon
These two have much different peak hp and peak tq numbers with the 8k rpm power being much different between the two as well. I do not know why they are so different, but this is certainly not typical compared to what I've seen in the past. My only guess is the curve differences are from load-bearing vs non.
I cannot answer this but it intrigues me as well!

Originally Posted by Warrtalon
Another thing is that dyno differences are not based on a percentage as power increases but closer to a static difference. Here, we're looking at a 34whp difference, but that's still lower than previous ones I've seen.
Thats the part htat threw me for a loop, I was under the impression you could look for close to a 100whp gain going from Buschurs MD to any Dynojet, that appears to be untrue.

Scorke
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Old Jul 13, 2008 | 12:45 PM
  #52  
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threadjacked!

Why not just post links to the dyno runs and let people figure things out for themselves dyno-wise? I can tell you right now that finding one all encompassing, universally acceptable dyno benchmark is just NOT going to work out in this lifetime so let's save 3 pages of back and forth on that topic please!

Heck, even if somebody did, there'd still be 4 pages worth of bickering about ambient temp/humidity/elevation/dyno loading etc.

OP - Nice thread! Good to know the options and some ballpark figures, plus quick links to the curves. Thanks

Last edited by theshadow; Jul 13, 2008 at 12:47 PM.
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Old Jul 13, 2008 | 12:59 PM
  #53  
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Good topic void. This has been intriguing me as of late even though i won't pull the trigger on one for at least another year and a half
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Old Jul 13, 2008 | 08:53 PM
  #54  
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Originally Posted by EVO8LTW
My own opinion is that it'd be better to just have multiple numbers with links for each and then people can look at the links themselves to judge mods, dyno, etc. Averaging in an outliar can really skew the numbers.

Thanks for doing this.
Well ... to be honest I'm doing this for purely selfish reasons - I have a WR9 in my car that's just about had it, and am trying to decide where to go next. But thanks for the props nonetheless

Ok, here's the new plan:

1. I will only add numbers for posted dyno sheets, and only on Mustang dynos (because I don't know how to convert to a Mustang equivalent from the other ones). If you post the dyno sheet in this thread, I will link to that specific post so it's easier to find.

2. I will update the table with the statistical average for each turbo, based on all the listed posts, together with the standard deviation. That should give people a quick look comparison, but with an indication of the spread of numbers reported for each turbo.

The more data points the better, so help me out and hit the search button .
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Old Jul 14, 2008 | 03:45 AM
  #55  
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Originally Posted by voidhawk
Well ... to be honest I'm doing this for purely selfish reasons - I have a WR9 in my car that's just about had it, and am trying to decide where to go next. But thanks for the props nonetheless

Ok, here's the new plan:

1. I will only add numbers for posted dyno sheets, and only on Mustang dynos (because I don't know how to convert to a Mustang equivalent from the other ones). If you post the dyno sheet in this thread, I will link to that specific post so it's easier to find.

2. I will update the table with the statistical average for each turbo, based on all the listed posts, together with the standard deviation. That should give people a quick look comparison, but with an indication of the spread of numbers reported for each turbo.

The more data points the better, so help me out and hit the search button .


BTW, what's up with your WR9? Does it need a rebuild or are you just tired of it?
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Old Jul 14, 2008 | 06:46 AM
  #56  
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edited to stay on topic

Last edited by 2highpsi; Jul 14, 2008 at 06:52 AM.
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Old Jul 14, 2008 | 07:35 AM
  #57  
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Originally Posted by EVO8LTW


BTW, what's up with your WR9? Does it need a rebuild or are you just tired of it?
Needs a rebuild. I've been holding off to let the dust settle on the HTA Green (which morphed into the white), and also hoping CBRD would release their BBK.
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Old Jul 14, 2008 | 07:41 AM
  #58  
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Originally Posted by voidhawk
Needs a rebuild. I've been holding off to let the dust settle on the HTA Green (which morphed into the white), and also hoping CBRD would release their BBK.
good news, think our turbine wheels are coming

cb
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Old Jul 14, 2008 | 07:55 AM
  #59  
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evo 9 20G numbers on krazirob's signature on TTP's dyno
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Old Jul 14, 2008 | 02:13 PM
  #60  
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Originally Posted by CBRD
good news, think our turbine wheels are coming

cb


O word. Its about damn time homey J/k. Hit me up brother
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