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E63 / E64 6 Series (2003 - 2013)
The E63/E64 BMW 6 Series builds on BMW's sporty heritage with aggressive lines and an incredible motor to back the design up. Available in coupe and convertible trims with a standard 4.8 liter engine producing 360 horsepower and 360 lb-ft of torque, the 6-series is a popular choice that exceeds expectations.

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  #1  
Old 05-24-2011, 01:29 AM
eurowned eurowned is offline
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removing resonator only??

Hi everyone, I currently own a 09 650i convertible
i was thinking going to the shop tomorrow to get the resonator removed and keep the stock exhaust...
will this make the sounder louder? or should i not even bother doing so?
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  #2  
Old 05-24-2011, 02:36 AM
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Yorgi Yorgi is offline
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Read this thread: Everything you ever wanted to know about resonators and x-pipes...
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Last edited by Yorgi; 05-24-2011 at 02:37 AM.
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  #3  
Old 05-24-2011, 05:07 PM
JPEG23 JPEG23 is offline
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Quote:
Originally Posted by Yorgi View Post
Good info, I never saw this thread til' now.


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  #4  
Old 05-24-2011, 06:37 PM
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Yorgi Yorgi is offline
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After reading that thread I plan on removing all 3 resonators first with an x-pipe and see how that sounds with stock mufflers.
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  #5  
Old 05-24-2011, 07:00 PM
JPEG23 JPEG23 is offline
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Originally Posted by Yorgi View Post
After reading that thread I plan on removing all 3 resonators first with an x-pipe and see how that sounds with stock mufflers.
You and me both, I really like the tone of the OEM exhaust but have always felt it needed to be louder.


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  #6  
Old 05-24-2011, 07:21 PM
eurowned eurowned is offline
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Thank you guys!, tomorrow I'm going to the shop to get the front and rear resonator removed but leaving the x pipe in the middle and keeping the stock mufflers!
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current: 2009 Audi R8 V8 4.2 R-tronic

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2009 650I Convertible *Fully Loaded* - Imola Red w/ Beige Dakota leather - gone... and not missed
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  #7  
Old 05-24-2011, 07:40 PM
JPEG23 JPEG23 is offline
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Originally Posted by eurowned View Post
Thank you guys!, tomorrow I'm going to the shop to get the front and rear resonator removed but leaving the x pipe in the middle and keeping the stock mufflers!
Nice, since you're doing it tomorrow, post a before and after vid please. Both under load and not, would be great.


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  #8  
Old 05-24-2011, 07:48 PM
eurowned eurowned is offline
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will do
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FS: Vertini Hennessey 20" staggered rims, ACS trunk spoiler, and Cobra radar detector

past cars:

2009 650I Convertible *Fully Loaded* - Imola Red w/ Beige Dakota leather - gone... and not missed
2006 S500 AMG package Black/Black MURDERED OUT - Sold
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  #9  
Old 05-24-2011, 09:19 PM
White Drop Top White Drop Top is offline
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This weekend I too am removing the all resonators and installing the x pipe. Car is way too quite .
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  #10  
Old 05-24-2011, 09:53 PM
JPEG23 JPEG23 is offline
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Quote:
Originally Posted by White Drop Top View Post
This weekend I too am removing the all resonators and installing the x pipe. Car is way too quite .
Videos before and after as well please. I won't have time to do mine for a few weeks and I want to be sure I want to go this route, over swapping mufflers.


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  #11  
Old 05-24-2011, 10:39 PM
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The resonators do a huge amount of sound deadening. Check out the YouTube vid below where a guy replaced the stock exhausts with straight pipes and it was actually not that loud due to the resonators.

Hmmm....I think I like the sound of the exhaust delete better. Its a bit deeper.

Here are two vids of stock exhaust with no resonators, might actually be too much.



Here are two vids from the guy who just eliminated the stock exhausts:

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Last edited by Yorgi; 05-24-2011 at 10:47 PM.
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  #12  
Old 05-24-2011, 11:35 PM
eurowned eurowned is offline
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how do you do an exhaust delete? do you replace it with aftermarket exhaust? or
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2009 650I Convertible *Fully Loaded* - Imola Red w/ Beige Dakota leather - gone... and not missed
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  #13  
Old 05-24-2011, 11:45 PM
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Like the burble in the exhaust note!
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  #14  
Old 05-24-2011, 11:48 PM
eurowned eurowned is offline
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do i go into the shop and ask for the muffler delete then??
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FS: Vertini Hennessey 20" staggered rims, ACS trunk spoiler, and Cobra radar detector

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2009 650I Convertible *Fully Loaded* - Imola Red w/ Beige Dakota leather - gone... and not missed
2006 S500 AMG package Black/Black MURDERED OUT - Sold
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  #15  
Old 05-25-2011, 01:15 AM
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Quote:
Originally Posted by eurowned View Post
do i go into the shop and ask for the muffler delete then??
Yes, they just pull the exhausts and install a custom straight pipe with tips. Should cost $100 to $200 max.
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'02 Highlander - kid hauler
'01 330Ci - winter beater

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  #16  
Old 05-25-2011, 01:20 AM
eurowned eurowned is offline
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Quote:
Originally Posted by Yorgi View Post
Yes, they just pull the exhausts and install a custom straight pipe with tips. Should cost $100 to $200 max.
i see thanks Yorgi, the video completely made me change my mind to delete the mufflers!
do you think it will be much if i get my resonators removed also?
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current: 2009 Audi R8 V8 4.2 R-tronic

FS: Vertini Hennessey 20" staggered rims, ACS trunk spoiler, and Cobra radar detector

past cars:

2009 650I Convertible *Fully Loaded* - Imola Red w/ Beige Dakota leather - gone... and not missed
2006 S500 AMG package Black/Black MURDERED OUT - Sold
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  #17  
Old 05-25-2011, 04:29 AM
funktekk funktekk is offline
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wow thanks for the save. IMO the muffler delete sounds much better. I will be interested to hear some real world opinions.
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  #18  
Old 05-25-2011, 07:21 AM
knox6er knox6er is offline
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I thought it was posted in the other thread that deleting the third resonator and replacing it with an Xpipe lets the engine breath better.
Deleting the Catbacks, although sounds better, does nothing to unrestrict the engine, apparently it will still bottleneck where the Xpipe should go.

I am thinking to just delete the third resonator, install the Xpipe first and see how that sounds then go from there.
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  #19  
Old 05-25-2011, 07:44 AM
White Drop Top White Drop Top is offline
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decisions decisions.....now I too do not knwo which way to go? Would going NO muffler be a loss of torque though for not having enough back presure or would the resonators provide enough? I do not want to make any mods that will loose power or set off my check engine lights but man she needs some more sound
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06 Merc CLS 550
07 Ferrari F430
06 Ferrari F430 Spider
06 Lambo Gallardo
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  #20  
Old 05-25-2011, 12:09 PM
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Yorgi Yorgi is offline
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Actually another big problem with the OEM system is the fact that BMW changes the pipe diameter from 60mm down to 55mm after the second "joining" resonator, which restricts flow by ~ 20%.

I am not 100% sure what I want to do now either. I want more volume on wide-open-throttle but I don't want to add drone at highway speeds. A performance boost would be a bonus but it's not my number one priority.

It's hard to make a decision on two YouTube videos. It would be great if someone on the forum who's done the resonator delete could add some feedback.
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'02 Highlander - kid hauler
'01 330Ci - winter beater

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  #21  
Old 05-25-2011, 12:52 PM
White Drop Top White Drop Top is offline
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Quote:
Originally Posted by Yorgi View Post
Actually another big problem with the OEM system is the fact that BMW changes the pipe diameter from 60mm down to 55mm after the second "joining" resonator, which restricts flow by ~ 20%.

I am not 100% sure what I want to do now either. I want more volume on wide-open-throttle but I don't want to add drone at highway speeds. A performance boost would be a bonus but it's not my number one priority.

It's hard to make a decision on two YouTube videos. It would be great if someone on the forum who's done the resonator delete could add some feedback.
Just left my muffler shop that does all high end cars. Ferrari, Lambo, Aston etc. The guy did my murcielago removed all cats, straight piped into aftermarket exhaust system. Now that was loud.

We put my six on the rack and low and behold I have magna flow mufflers!!! I was told the car had the BMW sports exhaust when I bought her and alot of people here questioned that so I looked for that option and could not find it for the six. Now I know why, there is NO BMW sports exhaust for the six I have magna flow mufflers.

Anyway I told him looking for a better sound and told him about the suggestions made hear. He said the thing to do is remove the front two resonators and place either an X pipe there or H pipe. The x pipe will give a high pitched F-1 sound and the H-pipe a more muscle car. I opted for the X pipe. Then also remove the rear (box resonator) and straight pipe from there to the muffler. 2.5 inch or 60mm all the way. $200 dollars and he said it will sound much better and no droning. The droning is caused from the x pipe placed in the rear near the muffler or just straight pripes. If the x pipe is placed up fron where the front two resonators are you shoudl have no droning. He also said no loss of torque or HP. Getting her done next Tuesday cant wait!
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Current cars 2008 650i Convertible full tint, 22' wheels magnoflow 2007 Range Rover HSE supercharged

Past Cars/Glory Days
02 lambo Murcielago
06 Bentley CGT
06 Merc CLS 550
07 Ferrari F430
06 Ferrari F430 Spider
06 Lambo Gallardo
05 Lambo Gallardo
04 Ferrari 360 Challenge Stradale
01 Ferrari 360 spider
05 Audi S6
02 Porsche targa S
99 Ferrari 360
91 Ferrari 348TS
99 Hummer H1 soft top

Last edited by White Drop Top; 05-25-2011 at 12:55 PM.
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  #22  
Old 05-25-2011, 01:25 PM
eurowned eurowned is offline
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I'm on my way to muffler shop right now! I'll prob ask how "white drop top" option will sound like but I'll prob do both muffler delete and that too then
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current: 2009 Audi R8 V8 4.2 R-tronic

FS: Vertini Hennessey 20" staggered rims, ACS trunk spoiler, and Cobra radar detector

past cars:

2009 650I Convertible *Fully Loaded* - Imola Red w/ Beige Dakota leather - gone... and not missed
2006 S500 AMG package Black/Black MURDERED OUT - Sold
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  #23  
Old 05-25-2011, 01:59 PM
funktekk funktekk is offline
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please keep us informed. I think I want more of a muscle car sound than an f1 sound.
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  #24  
Old 05-25-2011, 02:03 PM
eurowned eurowned is offline
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Resonators and mufflers!
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current: 2009 Audi R8 V8 4.2 R-tronic

FS: Vertini Hennessey 20" staggered rims, ACS trunk spoiler, and Cobra radar detector

past cars:

2009 650I Convertible *Fully Loaded* - Imola Red w/ Beige Dakota leather - gone... and not missed
2006 S500 AMG package Black/Black MURDERED OUT - Sold
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  #25  
Old 05-25-2011, 02:14 PM
eurowned eurowned is offline
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I decided to get my muffler deleted and leave my stock resonator,
The guy at the shop told me that removing the resonator will sound too loud haha
Removing the muffler with straight pipe and leaving the stock tip!

He said it will take me hour-hour and an half with 140!
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current: 2009 Audi R8 V8 4.2 R-tronic

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2006 S500 AMG package Black/Black MURDERED OUT - Sold
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