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      02-24-2017, 05:28 PM   #34
zenmaster
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Drives: '17 M2
Join Date: Mar 2007
Location: Atlanta

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Quote:
Originally Posted by marcusfva View Post
Yes I know, but here they are used to consider always crank values. They use a correction based on a DIN 70020, different from your dynos. My M2 hit 295whp, a lot less of US ~330-335 whp stock M2.
Take a look to one of the most famous ecu tuner in IT:

https://www.facebook.com/biesseracin...4181830832854/
The US has bench dynos. I know Dinan uses them.
DIN 70020 specifies that HP be measured at the crank, and the metric is in PS rather than HP. The correction factors should mainly be related to things like humidity and temperature. So your shop further corrected based on something outside of the standard if they used a chassis dyno, right? It would seem like the DIN correction following the standard would be miniscule compared to the conversion from whp to engine hp. How they figure out what that correction factor should be?
Appreciate 0