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I think the "why" questions will be answered with marketing speak and therefore are lower on my list of importance.
I'd like to ask them, in their words and in technical speak, how they would describe the differences between the n54/n55 and the s55 - what makes it an M engine.
We know it's a closed deck - what does that mean to them in technical or quantifiable terms? Is the S55 "overcooled" now in that it has lots of excess cooling capacity built into this new block? How are the pistons and valves built better than the n54/n55 to handle the increased power?
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