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MPPSK+Catless downpipe
Hello all,
Today I decided to install my VRSF Catless downpipe on my 2017 340i with MPPSK and let me tell you, it sounds brutal. But, it is too loud for me (videos dont do it justice) and it is also running a little rough, on idle it stutters and im assuming it is because it is not tuned or maybe due to the 02 sensor spacer I put on it. Anyways, once my mechanic is free im going to put the oem one back one.
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