I took my previous E90 M3/E70 X5M/F10 M5/F80 M3 to Jesse at Irvine BMW and never had any complains from my end. Dealership was friendly as well with mods (of course, all of M cars were modified).
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PAST: F80 M3 ZCP | 911.1 C2S | F10 M5 ZCP | E70 X5M | E90 M3 | E46 M3 | E36 M3
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