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      07-15-2012, 02:31 PM   #11
JustinTJ
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Drives: MY13 F30, MY02 E36/7
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Also why does the 640i get more power and torque? Isn't it the same n55 motor aside from the factory ratings differences?
Probably because it starts with more.

On a side note, the 328 tune brings it up to 335 power levels. Wonder if it's more cost effective to tune or just buy the upgraded engine?
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