06-27-2013, 12:08 AM
Join Date: Apr 2012
Location: Vancouver, WA
What I Drive: 2014 FiST/FoST
FF Reputation: 54
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Originally Posted by Joeywhat
Dyno numbers are not universally accurate...what one person gets on one dyno will differ greatly from another dyno, even with the same car (and often same type of dyno as well).
It's best to use them as a comparison point. Find what the person ran on that dyno (and not a different one...) while stock, or with a different configuration, and see how much power they gained from what hey added on.
Exactly this. The only numbers worth putting serious thought into are same-car, same-dyno testing. Even then there can be wide swings if the environment is different. What you also have to consider is overall-percentage gains because one car may only baseline at 140HP OEM while another may baseline at 150HP. If each car gains 25HP, the lower baseline has a higher percentage increase.
This is exactly why people cannot try to assume a certain 'drivetrain loss' percentage. If you assume a 10-15% drivetrain loss then you are saying that by adding a CAI you lose (or gain, depending on math) that same 10-15% even though a CAI has nothing to do with you're drivetrain.
Ultimately, use numbers as an idea and for comparison, but take them with a grain of salt.
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