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      03-05-2018, 08:32 PM   #4
TheHouseWon
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Drives: 2013 M5
Join Date: Nov 2015
Location: SoCal

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You always have valuable data!

I wondered about the difference between FBO S63 vs. Built s63 w/bigger turbos. The low end torque is surprisingly strong on the S1 (quicker spool). I suppose in order to really enjoy your build, you have to play with it above 3.5-4k where the magic starts to happen.
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