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GEN 2 (2017-2020) Ford F-150 Raptor Forums
Ford Raptor Engine Discussion and Performance Mods
Raptor drive train loss for Dyno numbers
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<blockquote data-quote="TXRaptor" data-source="post: 1291827" data-attributes="member: 181"><p>After doing some additional research, I came across an article which explains why it is not possible to correlate the numbers from a dyno to the SAE net HP numbers at the crank in any consistent way:</p><p></p><p><a href="http://www.superstreetonline.com/how-to/engine/modp-1005-drivetrain-power-loss/" target="_blank">http://www.superstreetonline.com/how-to/engine/modp-1005-drivetrain-power-loss/</a></p><p></p><p>After much detailed explanation, his comment from the end of the article sums it up:</p><p></p><p>"So rather than attempting to convert your vehicle's dyno-measured wheel horsepower to a SAE net horsepower figure using a percentage or a fixed horsepower value, you're far better off accepting the fact that these two types of horsepower measurements aren't easily correlated and forego any attempt at doing so."</p></blockquote><p></p>
[QUOTE="TXRaptor, post: 1291827, member: 181"] After doing some additional research, I came across an article which explains why it is not possible to correlate the numbers from a dyno to the SAE net HP numbers at the crank in any consistent way: [URL]http://www.superstreetonline.com/how-to/engine/modp-1005-drivetrain-power-loss/[/URL] After much detailed explanation, his comment from the end of the article sums it up: "So rather than attempting to convert your vehicle's dyno-measured wheel horsepower to a SAE net horsepower figure using a percentage or a fixed horsepower value, you're far better off accepting the fact that these two types of horsepower measurements aren't easily correlated and forego any attempt at doing so." [/QUOTE]
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GEN 2 (2017-2020) Ford F-150 Raptor Forums
Ford Raptor Engine Discussion and Performance Mods
Raptor drive train loss for Dyno numbers
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