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I came from a 2011 F10 550i with N63 and now a F06 with N63Tu. Not apples to apples but close enough comparison in terms of engines....
My 0.0002 cents on the N63 and N63Tu. Although, they are not much difference on paper, but to me, going from N63 to N63Tu is a world of difference. Granted some of it may be due to the different tuning on a F06 vs a F10 but still.... Seems to me the engine is more responsive in the F06 vs the F10. I am not sure whether that is completely due to the N63Tu or more due to different tuning by BMW with the F06 (probably the later). But I do feel the power of the N63tu during pull way more than the F10.
However, don't believe that you get better mileage with the N63Tu. My F06 with the N63tu consistently drinks around 5-7% more gas at the pump than my F10 with the N63tu for similar routes.
And the N63tu burns engine oils just the same as the N63, for me at least....
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F06 650i Gran Coupe Ruby Black/Dakota Cinamon- 2012-10-12 Adaptive Drive/IAS/Surround View/Adaptive LED/Comfort Seats/BMW 356 Liquid Black/Michelin PSS 245/35R20-285/30R20
E93 M3 Cabriolet Satin Pearl White/CR - 2012/03/12  Bilstein PSS10/ Michelin PSS 245/35R19-265/35R19 Brembo GT
2011 F10 550i M Sport - Retired
Last edited by mlai; 03-10-2013 at 12:09 AM..
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