BMW M2 Competition Lightweight (ab OPF) vs Akrapovic Slip on Sound

for more follow my Instagram: myBMWadventures M2 Competition HHS (EU spec - with OPF) with Lightweight Stainless Steel OPF back Exhaust (no mid resonator) vs M2 Competition Black Sapphire (EU spec - with OPF) with Akrapovic Slip-on Exhaust and mid resonator mod. both stock downpipe and opf filters

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