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F10 / F11 (2011 - Current)
The new chapter in the highly successful story of the BMW 5 Series Sedan (F10) and wagon (F11)

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  #1  
Old 03-25-2013, 09:05 PM
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Anyone removed a resonator or 2 from their stock exhaust?

I thought I have read of a member or 2 that removed one or two of the silencers on the stock 535 F10 exhaust. Can anyone comment or give advice on this? My goal would be to get a SLIGHT increase in exhaust note without having any drone or interior resonance.
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  #2  
Old 03-25-2013, 09:16 PM
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That was me. It only gave the exhaust 3 more decibels.
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  #3  
Old 03-25-2013, 09:51 PM
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Ah true! Sorry I forgot Mr Grumpy. Thank you for sharing that pic as that was my next question. Hmm, that is interesting that you removed that crossover box. Back in my muscle car days it was desirable to have a "X-pipe" to balance exhaust pulses. I was assuming there would single resonators on each dual pipe.

Mr Grumpy, would you recommend that exhaust mod?

Thanks
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Old 03-25-2013, 10:04 PM
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Mr. Grumpy Mr. Grumpy is offline
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Quote:
Originally Posted by BigDeep1 View Post
Ah true! Sorry I forgot Mr Grumpy. Thank you for sharing that pic as that was my next question. Hmm, that is interesting that you removed that crossover box. Back in my muscle car days it was desirable to have a "X-pipe" to balance exhaust pulses. I was assuming there would single resonators on each dual pipe.

Mr Grumpy, would you recommend that exhaust mod?

Thanks
It's not an X-pipe. I actually thought the same thing but after removing it I noticed that it's only two resonator pipes joined by some base. I was tempted to open it to see if it was some sort of H-pipe but I haven't done it. Our car won't benefit from the scavenging benefits of an X-pipe anyways because the gases meet at the turbo housing and leave the housing through a single pipe, it just get divided by a Y after the catalytic converter.

In regards of recommending the mod it will be entirely up to you. The only major sound difference is when the engine is under load or at WOT and is not that big of a difference, but then again it may be exactly what you're looking for.
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Last edited by Mr. Grumpy; 03-25-2013 at 10:28 PM.
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  #5  
Old 03-26-2013, 12:22 PM
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Interested in this as well. Mostly curious as to the sound QUALITY of removing the resonators, as I've heard some cars which have had that setup and sounded "dirty" in a not-good way, like louder but less "tuned" or clean.
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Old 03-26-2013, 10:04 PM
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BigDeep1 BigDeep1 is offline
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Quote:
Originally Posted by Mr. Grumpy View Post
It's not an X-pipe. I actually thought the same thing but after removing it I noticed that it's only two resonator pipes joined by some base. I was tempted to open it to see if it was some sort of H-pipe but I haven't done it. Our car won't benefit from the scavenging benefits of an X-pipe anyways because the gases meet at the turbo housing and leave the housing through a single pipe, it just get divided by a Y after the catalytic converter.

In regards of recommending the mod it will be entirely up to you. The only major sound difference is when the engine is under load or at WOT and is not that big of a difference, but then again it may be exactly what you're looking for.
Thanks Mr G! Great information. I guess BMW used some serious sound deadining mufflers. If this wasn't a family car for me I would have tried the Dynomax VT mufflers.
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Old 03-27-2013, 07:36 AM
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Would dynomax mufflers fit on an f10? Checked out their website and you can't even pull BMW up on their accessible cars list.
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