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I have an e90 335i, which only has primary cats in the downpipe, no secondary cats or resonators. I just had the vrsf catless downpipe installed with the BMW performance exhaust and it definitely sounds pretty good. I do get a slight exhaust smell, but once you start driving it isn't noticeable. Sound wise though, with no cats or resonator, think mini diesel turbo truck.. Definitely turns heads.
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