I shift at 6400-6500 on my stock turbos and have set some pretty decent times
from 5000-5500 rpm we start to drop boost
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F10 M5 2013 Sakhir
Eventuri Intakes, Supersprint backboxes, catless downpipes, ssp spec r, ECU flash, JB4 BCM and BMS dual CM10 meth
Insta: Tommy_turb0