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07' N54 vs 15 ' N55
My N54 was a MT were my N55 is AT.
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I just loved the N54 but I do think that the 8-speed transmission is the clear winner here. Shifting so fast the ZF really makes the car feel so much faster.
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So I do think the N54 is more tuner friendly but for stock -- I prefer my N55 ZF setup.
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Not to mention the rush to market design failures of the N54 (early 07' Model).
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N54<N55<B58*
* If the cooling management design proves reliable.
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