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      12-13-2013, 10:08 AM   #48
CanAutM3
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Quote:
Originally Posted by Alessandro View Post
comon sense tells me 450 - 500 whp with tune should be doable
I would add that 450-460 WITHOUT a tune is very likely .

As has been discussed multiple times in various other threads, the S55 at 431hp is most likely underated by 20-30hp, if not more. This has been demonstrated with most other FI BMW engines.

I am looking forward to see some real world data (acceleration runs/dynos) that will indicate the actual power that the S55 generates.