Thread: Mid pipe mods
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      12-01-2021, 10:39 PM   #475
csayad
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Drives: BMW M3 xDrive
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2023 BMW M3 Competi ...  [8.57]
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Has anyone done just a secondary cat delete? I wanna delete the 2nd cat to maybe even free a tiny bit of power. Also, would deleting the second cat screw with my warranty? Yes I'm that type of guy, but I don't think it will since I've seen ppl not getting any CEL's and stuff. Also does anyone know the size of the piping for the secondary cats?
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