Thread: bms stage 1 m5 vs m4
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      08-13-2018, 09:32 AM   #4
TrevorM3
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Drives: 6.3 AMG
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Why are you doing 4th gear pulls?

I had an AA piggyback, with downpipes, had no issues handling jb4 m3's/m4's with downpipes.
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