Intake & Exhaust Questions and info regarding various aftermatket exhaust systems for the G35 (Headers,Y-Pipes, and Cat-Back Systems)

Plenum Shootout test.

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  #61  
Old 12-05-2009, 01:57 PM
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Originally Posted by liche
With numbers that close, i don't believe you can conclusively say anything about the Spacer other than its similar to the Mrev2 without the spacer.

BTW, when you did these runs, how did you maintain your control group? Were they all on the same dyno, in the same conditions? If it was the same dyno (such as Dynojet), did you keep the car in place the entire time with the straps not removed?
Yes, same car, same dyno, same tank of gas, same atmospheric temperatures, same coolant temperatures, car was not removed from the dyno.
It was done on a Dynapack so there are no straps to remove or alter the test results. Dynapack is a wheelhub dyno. And it is the most repeatable of all dynos.
 
  #62  
Old 12-05-2009, 02:08 PM
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Originally Posted by gabe3d
It is not my car nor my test. However each setup were repeated multiple times so from a statiscal approach, there are some conclusions that can be made.
I agree you could probably make some conclusion between the Baseline and MREV, but there is no usable information regarding MREV vs. MREV+Spacer.

The Dynapack has an accuracy of +/-1% on its measurements. 1% of 270hp is 2.7hp, so when you add your error bars, you'll see each case is virtually identical.
 
  #63  
Old 12-05-2009, 02:53 PM
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Accuracy and R&R are two entirely different things.
 
  #64  
Old 12-10-2009, 06:02 PM
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