Quote:
Originally Posted by CanAutM3
Yet the Maha dyno showed 465ps at the crank. That is 34ps more than the official rating, or 7.8%.
As I posted more than once, the WHP, or P-rad, number obtained on a Maha dyno cannot be used for comparison. Only the crank power number is really valid for comparison.
That being said, I still believe that there is no "underrating" per say. I am still convinced that the S55 (and other FI engines) behave differently on chassis dynos compared to the official test protocol on bench dynos.
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I know, but it's still hard to understand the MAHA crank numbers, as they are "all over the place" in the Sport Auto tests...
The whp number of 375ps the MAHA measured, is actually what a 431PS engine with 13% drivetrain losses would get...