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Old 01-07-2013, 09:51 AM
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Bönz Bönz is offline
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Location: Michigan
 
Join Date: Jun 2012
Posts: 428
Mein Auto: 650i
Quote:
Originally Posted by Itinj6 View Post
Same engine.

Matter of fact, the X6M (and X5M) received that S63 engine first and was later adapted by the M6 (and M5) as a TU version with valvetronic.

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+1 My NJ friend is correct. The TU upgrade also included increased boost and a higher compression ratio if memory serves.

I suspect the same is true for the N63Tu versus the N63. It's the boost and CR that results in the HP increase, not the vlavetronic.
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