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Resonated catless downpipes are pretty darn quiet paired up with a resonated exhaust.
I used to run fully catless downpipes with a straight pipe on my N54 and that was LOUD.
My setup now with resonated downpipes and an akra evo system sounds just a tad bit louder than a car with upgraded midpipes. It's also as quiet as stock with the valves closed.
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2017 F80 M3 ZCP / AA GESI DPs / Akrapovic Evo / BBS FI-R 19" / Bend Calibration ECUTEK Flex Fuel | Bilstein B16 DDC + CS EDC / BMC Filters / BMS OCC / CSF HE / ESS CP / Nitto NT555R2 / PD Crank Hub / SPL Suspension / Uniden R7 / Wagner Top Mount IC
2021 Mini GP3 / BMC Filters / BM3 / Cary Jordan E30 / Wagner IC / Remus Race
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