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      11-07-2019, 11:17 AM   #4
TemjinX2
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Drives: 2008 335xi e92
Join Date: Dec 2009
Location: Socal OC

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98% will depend on who tunes your car. Mechanically, people have taken the stock n55 block to 600-700whp without issues.

But strongest engine in the world can't protect itself from crap tune.
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