03-11-2024, 09:17 PM | #45 |
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For a 2018 with stock muffler, just do a resonator delete. It will be much less expensive than the Dinan X pipe and should be a bit louder. You should be able to find a shop to do this for less than $400. They will drop the exhaust, cut out the resonators and weld in some 409 or 304 stainless pipe.
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04-10-2024, 07:52 PM | #46 |
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Not sure if you already did it but there is no drone on my 2020 M550 with both resonators deleted. It’s a great result for very little expense.
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04-11-2024, 07:43 AM | #47 |
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I just got a shop to do this on my 2018 M550i and it sounds stock in comfort and incredible in Sport. Just found a local shop that will install my provided tips.
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04-11-2024, 03:44 PM | #48 |
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04-11-2024, 06:20 PM | #49 |
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Just had a local shop cut them out and replace with straight pipes, no X pipe. They didn’t ask and I didn’t think to discuss it with them.
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04-11-2024, 08:09 PM | #50 | |
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Also a before and after dyno run (Mainline hub dyno) with Stage 1 tuning showed a whopping 1hp increase with the Dinan X middle pipes. I got more noise with the Dinan X middle pipes, but would have been louder without the X I believe. |
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04-18-2024, 07:30 AM | #51 | |
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04-18-2024, 07:37 AM | #52 |
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I did a resonator delete and had an X pipe put in on my 2018. No drone and when the valves are open it is noticeably louder, pops ect. but I have a bm2 tune with burbles turned up from before the exhaust work. I will probably turn down the burbles. It sounds great and well worth the money. I have a stock muffler btw.
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04-18-2024, 10:00 AM | #53 | |
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Quote:
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04-18-2024, 11:26 AM | #54 | |
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Just do a resonator delete, it is the way to go. |
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04-18-2024, 11:43 AM | #55 |
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You got lucky, I have the same setup but get slight drone at idle. When I put my car in P and rev slightly, say 100 rpm drone subsides.
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04-18-2024, 03:31 PM | #56 |
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With that being said, how much inch of straight pipe did u get welded?
Last edited by Flys M550i; 04-18-2024 at 03:40 PM.. |
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04-18-2024, 03:40 PM | #57 |
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Great question. I’m not sure and at the time, didn’t think to ask. I think it’s whatever size the pipes are on the stock exhaust. These pictures aren’t great but they’re all I have.
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04-18-2024, 10:50 PM | #58 |
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One of the first things I do to my car. The sound is perfect for me and only paid $250. The mechanic had the biggest grin while he revved the engine and the exhaust popped. Would love to have quad tips but not paying $2k+ for an exhaust.
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04-19-2024, 01:59 PM | #59 |
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Where in SoCal did you get this done? I may take my car there. I am in NorCal on business and just got quoted $400. I'd rather find a $250 place...lol..
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