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      01-24-2013, 08:15 PM   #23

M54ccibo's Avatar
Drives: '13 F10 M5 AW/SO
Join Date: Apr 2012
Location: Orange County, CA

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Originally Posted by M54ccibo
Originally Posted by Rob///M5
Originally Posted by AndreyATC View Post
Are these WHP?
How did they come up with these numbers?

Also, factory numbers are underrated, so is it really 82hp increase?
Totally. I dyno'd stock 641whp. So, who's to say there's any gain at all. Put it side by side in a race.
Rob, are you sure 641whp? I think that may be extrapolated crank...544whp assuming 15% drivetrain loss is 641 crank. I dynoed yesterday 535whp, 487 ft-lbs, stock.
Posted just before me!! Still, these beasts are way under-rated. FWIW, Rob and I got results on the same dyno but different days.
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