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      11-04-2019, 07:18 PM   #13
fackamato
Second Lieutenant
Sweden
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Drives: 2017 M3 Comp
Join Date: May 2014
Location: Sweden

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2017 BMW M3  [0.00]
Any experience moving from an OTS stage 1 to a custom tune (91 Octane), without using a dyno? Worth it?
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