2.0L LSJ Performance Tech 205hp Supercharged SS tuner version. 200 lb-ft of torque.

how much faith in dynos do you have.

Old Aug 21, 2007 | 10:45 PM
  #26  
07SSCharged248's Avatar
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From: Rochester Hills, MI
good for tuning... other then that idk
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Old Aug 21, 2007 | 10:49 PM
  #27  
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p7x
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From: Ottawa
after to being dyno tuned I will probably never be on a dyno again. The only reason I like to see cobalt dyno #'s is product effectiveness and for the greater good of the cobalt community and its reputation.
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Old Aug 21, 2007 | 11:05 PM
  #28  
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From: Socal
Originally Posted by an0malous
I agree with you on dynos.
but if you think all tracks are equal then your deluding yourself.

You can "calculate" altitude/temp/humidity effects on your time....somewhat...

but what about track temp...tire temp....tire pressure....waterbox conditions....track timing equipment accuracy....startline track conditions....60ft traction....track rolling resistance...wind speed....wind direction....

there are just to many factors involved....exactly like a dyno....to have true accuracy.

The only way to have accuracy, is if all the variables are generally constant.

and the only way to do that is to compare on the SAME track...at the SAME time
similarly, the same dyno...on the same day....



Like i said relative.
true but i think that the point he is trying to make is that dyno numbers can be overinflated, while a track will only make you slower (unless there is a huge tailwind)

not trying to argue w/ you, thats just what i got out of reading both of your guys posts.
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Old Aug 22, 2007 | 10:23 AM
  #29  
Omega_5's Avatar
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From: Maidstone, SK
Originally Posted by an0malous
I agree with you on dynos.
but if you think all tracks are equal then your deluding yourself.

You can "calculate" altitude/temp/humidity effects on your time....somewhat...

but what about track temp...tire temp....tire pressure....waterbox conditions....track timing equipment accuracy....startline track conditions....60ft traction....track rolling resistance...wind speed....wind direction....

there are just to many factors involved....exactly like a dyno....to have true accuracy.

The only way to have accuracy, is if all the variables are generally constant.

and the only way to do that is to compare on the SAME track...at the SAME time
similarly, the same dyno...on the same day....
I know what your trying to say... but given this situation, everything was relative.
cblt12 has the idea.
No matter which way you look at it, the dyno is still a piece of equpiment, and a track is still the real world. For being a controlled environment, a dyno should have less factor affecting it. And we all know htat regardless of factors at a track, it all boils down to one very very important factor -> driver skill.
Beyond that, I just find it sad that for a measuring device, a dyno has such a high error involved. Do you think that Omega would try to sell you a thermocouple or pressure transducer with the same error as a dyno? I think not.
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Old Aug 22, 2007 | 11:37 AM
  #30  
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From: Ar-kan-sas
Originally Posted by an0malous
I agree with you on dynos.
but if you think all tracks are equal then your deluding yourself.

You can "calculate" altitude/temp/humidity effects on your time....somewhat...

but what about track temp...tire temp....tire pressure....waterbox conditions....track timing equipment accuracy....startline track conditions....60ft traction....track rolling resistance...wind speed....wind direction....

there are just to many factors involved....exactly like a dyno....to have true accuracy.

The only way to have accuracy, is if all the variables are generally constant.

and the only way to do that is to compare on the SAME track...at the SAME time
similarly, the same dyno...on the same day....



Like i said relative.
except every dyno has at least a 1-2% error factor
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Old Aug 22, 2007 | 01:30 PM
  #31  
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From: San Antonio
why can't you have both?
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Old Aug 22, 2007 | 01:43 PM
  #32  
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I still view a dyno as a good tool. After my mods my baseline was 262. Then bcp tuned the car (leaned it out to 11.4 and bumped the timing up 2 degrees). I made 280 then and the car's power came on a lot smoother.
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Old Aug 22, 2007 | 02:38 PM
  #33  
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From: Ar-kan-sas
Originally Posted by mezzanno
I still view a dyno as a good tool. After my mods my baseline was 262. Then bcp tuned the car (leaned it out to 11.4 and bumped the timing up 2 degrees). I made 280 then and the car's power came on a lot smoother.
thats exactly what many of our points are. its a GREAT tuning tool, not a great power measurer (is that even a word haha)
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