03-12-2018, 11:48 AM | #1 |
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228i Convertible exhaust question
So, I just bought a CPO 2015 228i xDrive Convertible M-Sport this weekend and it is perfect. Except one thing it is too dang quiet. I want it to have an aggressive tone on acceleration, and be louder at idle without droning.
My thoughts are keeping the stock tips, I have the exhaust flap, deleting the muffler and leaving the resonator. Then weld in a smaller muffler like the one in the link below, and a y-pipe in place of the current muffler. http://www.jegs.com/i/Dynomax/289/24...RoCKvQQAvD_BwE The only reason to put the smaller muffler in is because this car is my wife's daily, so I don't want it to be obnoxious for her everyday. The straight through muffler won't quiet it down too much but should take away some resonance. Let me know your guy's thoughts, will this give me the aggressive tone I'm looking for without any drone for the wife? Thanks.
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'15 BMW 228i xDrive Convertible M-Sport
My Other Cars: '18 Dodge Challenger Scat Pack; '78 Pontiac Trans Am 455 Future Cars: '19 RTR Mustang Ecoboost |
03-12-2018, 05:57 PM | #2 |
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muffler delete with a flap and resonator keeping with be fine since i have done the same thing as you plan to and it's really a pain in the butt to get a nice weld mod with the original tips. really want to see how your plan go! keep us updated
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03-14-2018, 01:32 PM | #3 |
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Well went to the muffler shop today and got a quote for a muffler delete. $300 Out the Door for stainless pipe and a single black tip to fill the valence. Decided to delete the flap after more research showed me that it doesn't do much, basically stays open after the car is warmed up. Will update again tomorrow after it gets done with a video and pics.
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03-16-2018, 08:46 AM | #4 | |
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03-16-2018, 02:35 PM | #5 |
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From everything I've read it doesn't throw an engine code. Atleast not a MIL on the dash, so I'm not worried about it, I just unplugged it and tied it out of the way, then ordered the BMW plug cover.
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03-16-2018, 02:51 PM | #6 |
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That is all you need to do. Just don't try and eliminate it.
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04-04-2018, 09:38 AM | #8 |
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Still need to post up some pics and a video, but after a few weeks with it, I'm happy with the muffler delete. Sounds awesome, just the right amount of rumble and pops on upshifts and deceleration. For $300 total (labor, pipe, powdercoated exhaust tip, and exhaust flap simulator) this exhaust is the best bang for the buck. Could definitely be done for cheaper with a different tip, I could see getting it for $200 with a standard tip.
All in all, wifey isn't complaining its obnoxious like my daily, straight piped Challenger 392 Hemi, so that's good lol... Anyways, I'll try to get some pics and a video this weekend.
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04-21-2018, 04:18 PM | #9 |
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I think you should check this out! M235i M-Performance exhaust, fits great, sounds awesome (no drone in comfort and nice pops in sport) plus it makes the car look better!
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04-23-2018, 02:38 PM | #10 | |
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04-23-2018, 07:45 PM | #11 |
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Did you end up keeping the resonator or deleting that as well? I deleted the resonator and still have the stock exhaust with the flap open and unplugged. Sounds like an angry baby. Ha ha. I wanted to ask you where in GA are you as I'm in SC in Columbia and go down to the Columbus area once in a while to see friends of mine.
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04-24-2018, 09:13 AM | #12 | |
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I'm in Peachtree City. About 30 minutes southwest of Atlanta.
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04-24-2018, 10:40 AM | #13 |
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KB34 Thanks for the response. I drive right through there on the way from ATL to Columbus on 85. I'm still on the fence. Do you have a video yet? I will eventually do the catless DP so I don't know about the delete with that. It might be too crazy for a DD.
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04-24-2018, 12:00 PM | #14 |
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I honestly get so busy I forget all the time. I'm currently doing my brakes, so I should have somewhat of a reminder to take a video. I'll try to get it posted in a day or two. And yeah with a catless DP it probably would be pretty loud for a dd.
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04-30-2018, 09:27 AM | #15 |
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Finally got a video taken. Not a long one and it's from an iPhone camera.
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'15 BMW 228i xDrive Convertible M-Sport
My Other Cars: '18 Dodge Challenger Scat Pack; '78 Pontiac Trans Am 455 Future Cars: '19 RTR Mustang Ecoboost Last edited by KB34; 05-01-2018 at 08:07 AM.. |
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05-15-2018, 08:51 AM | #16 |
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@KB34 thanks for posting that. I just did the OEM exhaust mod on the stock muffler. It's in between the sound of yours and stock. I'm planning on doing the DP later on so I didn't want it to be too crazy loud as I don't have the resonator. Yours sounds great.
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