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      12-04-2012, 08:51 AM   #18
GuidoK
#buildnotbought
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Drives: Z4 3.0i ESS TS2+
Join Date: Jul 2012
Location: Tinkering in the garage

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Quote:
Originally Posted by SmartBastard View Post
It's possible to measure the drivetrain loss,
And how would you do that?
If you don't measure at the crank and at the wheels you don't know the loss.
You cannot mesure the loss with only measuring the power at the wheels.
So its an estimate that 70KW (which is a lot; so much that it would be impossible to touch anything on the drivetrain becouse of the heat)

That's why a lot of tuners (like ESS) use an estimated standard loss value of 0,15 (which is still a lot imho especially with more powerful cars)
Somehow your tuner manages to double that figure.
If you think that figure is correct, than you have a serious drivetrain issue.
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