Thread: B-Spec Tune
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Old Tue, May-30-2017, 07:23:44 PM   #1
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Default B-Spec Tune

Does anyone know anything about the reliability of the B-Spec tune by build journal? I'm about to have my car flashed with the software in the next coming days but I want to make sure its a trusted first.
2006 M3 Competition | Silver Grey Metallic


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