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It's an electronic cut out that installs somewhere forward of the cans. Still not quite like running wide open because there are still cats ahead of it but it cuts out the mufflers. RPIs are basically the same - that tiny resonator they have doesn't do much.
In the vid, with it open it sounds pretty much just like the Z4M and E46 M3s in Grand Am....nice but not exactly stealthy on the highway.
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Silbergrau A08 / Sepang Brown LSD6 / Carbon Leather 4MY (1 of 3, this combo)
RAC RG63 | Conti EC-DW | GC/Koni-Dinan | Rogue RSM | Arqray | Autosolutions | BMW brace | Pinnacle tint |