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2Addicts | BMW 2-Series forum Technical Topics B58 (M240i) Engine, Transmission, Exhaust, Tuning Dinan Mid Pipe vs Resonator Delete

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      05-30-2017, 07:34 PM   #1
K9GunSlinger
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Dinan Mid Pipe vs Resonator Delete

Hi all,

Was looking at making the sound from my m240 more aggressive..

i came across these options..

either 500 dollars for a Dinan MidPipe

https://www.ecstuning.com/b-dinan-pa...d660-0057~din/

or half the price for the Dinan Resonator delete

https://www.x-ph.com/dinan-resonator...bmw-f22-m235i/

Can anyone help me distinguish the difference?

Thank you!

Last edited by K9GunSlinger; 05-30-2017 at 09:08 PM..
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      05-30-2017, 08:27 PM   #2
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Woo boy I have been asking myself this question for a while now. Would be great to hear the input from the community. Subbed.
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      05-31-2017, 06:58 AM   #3
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I was not aware that Dinan offered a resonator delete option. It is curious that this option deletes the rear resonator only. A thread earlier this year
(http://www.2addicts.com/forums/showthread.php?t=1331649)
reported that deleting the rear resonator made no noticable change to the exhaust sound on a M240i.

In contrast, there have been several threads indicating that deleting BOTH resonators (either via a Dinan midpipe or by simply having a muffler shop weld custom pipes in place of both resonators) resulted in pleasing sound improvements
(http://www.2addicts.com/forums/showthread.php?t=1352934).

So far, there is no report on just deleting the FRONT resonator and replacing it with a custom pipe. I hope to try that when I get my M240 since it would be the least expensive option with no obvious disadvantages.
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      05-31-2017, 07:51 AM   #4
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The Dinan midpipe it's the "premium" resonator delete option but i think the Dinan would perform better than the stock pipe with resonators deleted because the first one has a larger diameter.

Last edited by AlexM240i; 05-31-2017 at 08:20 AM..
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      05-31-2017, 07:52 AM   #5
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Go with the Dinan midpipe. You and your car deserve it !
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      05-31-2017, 08:16 AM   #6
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Dinan Resonator Delete > for M235 which only had one resonator
Dinan Midpipe (deletes 2 resonators) > for M240i
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      05-31-2017, 08:21 AM   #7
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Quote:
Originally Posted by marcthedark View Post
Dinan Resonator Delete > for M235 which only had one resonator
Dinan Midpipe (deletes 2 resonators) > for M240i
Correct.
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      05-31-2017, 06:44 PM   #8
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ah i see!! thanks for the input!
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      06-07-2017, 07:38 PM   #9
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OP we offer both
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      06-08-2017, 03:56 PM   #10
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Guys just FYI Dinan has awesome customer service you can always just pick up the phone and call them. They will spend as much time on the phone with you as you need.
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      06-08-2017, 06:45 PM   #11
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a local muffler shop can do both for a fraction of the cost.

Removing resonator or swapping midpipe will get you no performance gain and the sound change will be almost nothing. Better off using that money someplace else. just my .02.
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      06-08-2017, 07:07 PM   #12
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Quote:
Originally Posted by bryan_f22 View Post
a local muffler shop can do both for a fraction of the cost.

Removing resonator or swapping midpipe will get you no performance gain and the sound change will be almost nothing. Better off using that money someplace else. just my .02.
The sound gain with the Dinan midpipe transforms the M240i. Although I can see that might not be true for the M235i since it has only one resonator. While there certainly are other places you can spend your money, if you are looking at getting a more aggressive sound out of an M240i it's money well spent and cost effective.
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      06-08-2017, 10:02 PM   #13
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I hope you're right. I'm getting mine on Monday. Partnering it with a MPE, lets see how much better in sound it gets.
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      06-09-2017, 02:40 AM   #14
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Quote:
Originally Posted by bryan_f22 View Post
a local muffler shop can do both for a fraction of the cost.

Removing resonator or swapping midpipe will get you no performance gain and the sound change will be almost nothing. Better off using that money someplace else. just my .02.
Not quite, almost nothing?
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      06-10-2017, 10:40 AM   #15
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appreciate the feedback! if anyone can provide additional sound sound clips that would e awesome!
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      06-10-2017, 02:38 PM   #16
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Quote:
Originally Posted by mpbruin108 View Post
I hope you're right. I'm getting mine on Monday. Partnering it with a MPE, lets see how much better in sound it gets.
You have to do some mods to the midpipe or exhaust to make it work don't you?
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      06-10-2017, 02:57 PM   #17
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Quote:
Originally Posted by RotorOver View Post
You have to do some mods to the midpipe or exhaust to make it work don't you?
I'll find out monday. However, I was told it should fit easily like how if I just had the OEM exhaust. That was from EAS. We shall see.
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      06-10-2017, 05:04 PM   #18
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Quote:
Originally Posted by mpbruin108 View Post
I'll find out monday. However, I was told it should fit easily like how if I just had the OEM exhaust. That was from EAS. We shall see.
I think it was on the B58 FB page that someone wrote about how they had to alter the midpipe to make it work. I'll see if I can find it.

EDIT: Found it. Here is what the poster wrote:

"Okay, after spending a shit load of time getting the Dinan midpipe's custom tailored to fit the factory M Performance Exhaust (MPE), it's finally done. If you weren't aware, it's NOT a straight bolt on affair. I have modified the Dinan midpipe so I can go back to the stock midpipe within minutes if needed. My goal was to leave the MPE exactly as it comes from the factory.

Video to come soon, but this combined with the ER catless downpipe is bonkers loud. Sounds awesome on throttle and in boost, but is so obnoxious everywhere else (especially cold start). I told myself I would give it a week before I decide if I'm going back to the stock midpipe. I think this current setup would be perfect with the stock downpipe."

In the comments he said the midpipe and MPE inlet are both the same size so that's what causes the issue. Normally the stock midpipe slides into the MPE.
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Last edited by RotorOver; 06-10-2017 at 05:12 PM..
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      06-12-2017, 02:02 PM   #19
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I noticed that the UK 2018 promo literature for the M240i mentions that the exhaust has been modified with a resonator deleted to improve the exhaust note:

"The exhaust system is instantly recognisable by tailpipes in Dark Chrome. Removal of the middle silencer and intelligent air vent control produce a charismatic sound, reinforcing the sporty sensation."

Hopefully, this will be carried over to the U.S. M240's.
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      06-13-2017, 10:05 AM   #20
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Quote:
Originally Posted by havinfun View Post
I noticed that the UK 2018 promo literature for the M240i mentions that the exhaust has been modified with a resonator deleted to improve the exhaust note:

"The exhaust system is instantly recognisable by tailpipes in Dark Chrome. Removal of the middle silencer and intelligent air vent control produce a charismatic sound, reinforcing the sporty sensation."

Hopefully, this will be carried over to the U.S. M240's.
Nice catch, I'd be real interested in this as well. I believe in the mega-thread regarding model updates it had been mentioned future m-performance models would come with a different exhaust to help set them apart.
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      06-15-2017, 02:16 AM   #21
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Quote:
Originally Posted by havinfun View Post
I noticed that the UK 2018 promo literature for the M240i mentions that the exhaust has been modified with a resonator deleted to improve the exhaust note:

"The exhaust system is instantly recognisable by tailpipes in Dark Chrome. Removal of the middle silencer and intelligent air vent control produce a charismatic sound, reinforcing the sporty sensation."

Hopefully, this will be carried over to the U.S. M240's.
Source? I found the blurb here, but I'm skeptical of it since the pictures are not from a 2018 model.
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      06-15-2017, 02:19 AM   #22
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Quote:
Originally Posted by AbuQutaita View Post
Source? I found the blurb here, but I'm skeptical of it since the pictures are not from a 2018 model.
So it sound like they will drop resonators but introduce the muffler exhaust valve from the stock exhaust to the MPE to limit noise at the drivers control?
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Last edited by DJEwen; 06-15-2017 at 03:16 AM..
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