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Originally Posted by este
Going to go that route myself this week, as my current catless dp/ muffler delete setup has too much drone but didn't want to put the stock one back on. Haven't heard in person either but from different posts/videos seems like its an improvement in sound over stock m235i part.
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Definitely post in here when you do that! Another reference point would be great. Are you going back to stock cats or still catless? I don't intend to do any sort of downpipe for a while on my car due to warranty worries.