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2Addicts | BMW 2-Series forum Technical Topics B58 (M240i) Engine, Transmission, Exhaust, Tuning For anyone debating a resonator delete on an M240i

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      09-19-2021, 10:08 AM   #1
mevans313
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I did a resonator delete yesterday on my M240i, noise difference from the inside is only slight. But I made a comparison video for anyone debating. Sounds great from outside at least! I have active sound design still on in the video (fake engine noise through speakers) and I still think that is what drowns out even the louder exhaust note. I'll be turning that off soon. I paid $180 USD at an exhaust shop for anyone wondering, to cut out both resonators and weld two small sections of pipe back in.

Update: turned off ASD and still sounds nearly stock from the inside. Oh well, it was cheap enough!

Update 2: I downloaded BimmerLink to manually control the stock exhaust flap, this made a noticeable difference around town and I can actually hear a nice growl from out back. So, if you get a resonator delete you need to spend the $30 on BimmerLink too!

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      09-19-2021, 03:00 PM   #2
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Nice sound 👍👍
Funny as it sounds almost the same as with my remus non-resonated catback… Would of known I would of saved 2k and bought an LSD instead
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      09-19-2021, 03:44 PM   #3
mevans313
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Originally Posted by iv-128i View Post
Nice sound 👍👍
Funny as it sounds almost the same as with my remus non-resonated catback… Would of known I would of saved 2k and bought an LSD instead
Hey, if you could actually hear the difference in the cabin with the windows up, it was money well spent lol I already feel the need to go louder. I did consider the Remus system, how do you like it? Maybe I could get the valved muffler!
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      09-19-2021, 04:49 PM   #4
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Remus non resonated is great ! I personally love it. You definetely hear the sound difference from inside, I have a vert though…

Add a downpipe and you get more sound and more power
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      09-20-2021, 12:09 PM   #5
mevans313
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Originally Posted by iv-128i View Post
Remus non resonated is great ! I personally love it. You definetely hear the sound difference from inside, I have a vert though…

Add a downpipe and you get more sound and more power
I’d love a downpipe, but I plan on keeping this car for another ~5 years (only got it 6 months ago) and I don’t necessarily trust a downpipe’d stage 2 car to last 5 years reliably 😂 stage 1 I’m fine with. Though I did download BimmerLink to control the stock exhaust flaps manually, and keeping them open really made a difference! I can actually hear the growl from out back unlike before.
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      09-20-2021, 08:29 PM   #6
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Downpipe doesn't do anything to the reliability of the engine! Your FOOT on the other hand can severely impact the longevity of the engine! Lol
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      12-31-2021, 06:08 PM   #7
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I would like to chime in on this post to offer my experience with dual resonator delete on the M240i. I can echo the general consensus from others on this - 10-15% louder inside the car, very close to stock sound levels in Comfort mode, Sport mode and up there are many enjoyable pops and crackles accompanied by a more pronounced exhaust tone. No drone whatsoever, I am extremely picky with tone and volume as this is my daily driven vehicle. +1 for the OP, the video posted helped me greatly with decision making.
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      12-31-2021, 06:15 PM   #8
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Originally Posted by emillitello View Post
I would like to chime in on this post to offer my experience with dual resonator delete on the M240i. I can echo the general consensus from others on this - 10-15% louder inside the car, very close to stock sound levels in Comfort mode, Sport mode and up there are many enjoyable pops and crackles accompanied by a more pronounced exhaust tone. No drone whatsoever, I am extremely picky with tone and volume as this is my daily driven vehicle. +1 for the OP, the video posted helped me greatly with decision making.
Thanks! Glad I could help
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      01-02-2022, 10:03 AM   #9
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Quote:
Originally Posted by emillitello View Post
I would like to chime in on this post to offer my experience with dual resonator delete on the M240i. I can echo the general consensus from others on this - 10-15% louder inside the car, very close to stock sound levels in Comfort mode, Sport mode and up there are many enjoyable pops and crackles accompanied by a more pronounced exhaust tone. No drone whatsoever, I am extremely picky with tone and volume as this is my daily driven vehicle. +1 for the OP, the video posted helped me greatly with decision making.
Nice
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      01-18-2022, 06:32 PM   #10
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For what it's worth, I also deleted both resonators and really enjoyed the effect while everything else was still stock. However, since installing the high-flow VRSF downpipe, it's now a little too raspy in the lower RPMs for my liking. I'm going to add the resonators back one at a time, starting with the rear one, to see what configuration I like best. I'll take video/sound at each stage along the way to share.
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      01-23-2022, 12:45 PM   #11
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Nicely done with the video. I have to say that was one of the most useful exhaust comparisons that I've seen.
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      02-07-2022, 06:23 PM   #12
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Quote:
Originally Posted by N55toB58 View Post
For what it's worth, I also deleted both resonators and really enjoyed the effect while everything else was still stock. However, since installing the high-flow VRSF downpipe, it's now a little too raspy in the lower RPMs for my liking. I'm going to add the resonators back one at a time, starting with the rear one, to see what configuration I like best. I'll take video/sound at each stage along the way to share.
Quote:
Originally Posted by N55toB58 View Post
For what it's worth, I also deleted both resonators and really enjoyed the effect while everything else was still stock. However, since installing the high-flow VRSF downpipe, it's now a little too raspy in the lower RPMs for my liking. I'm going to add the resonators back one at a time, starting with the rear one, to see what configuration I like best. I'll take video/sound at each stage along the way to share.
Have you done so yet? I'm looking into buying a high flow catted downpipe so I'd love to hear the comparison. I can't find any videos of a catted high flow downpipe with a dual resonator delete.
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