M3 exhaust modification - Page 22

Zaw · 07-27-2012, 03:54 PM

Quote:

Originally Posted by ryguy84

Just dropped the exhaust off going to do the 4 pipe method. I drove home without the exhaust oh yeah it was a awesome experience with the top down.

Cool! Please report back with your thoughts on your new mod. I am also considering doing the 4 pipe method over the the OG 2 pipe method. I am concern if there will be drone and if it will be too loud.

ryguy84 · 07-27-2012, 04:28 PM

Quote:

Originally Posted by Zaw

Cool! Please report back with your thoughts on your new mod. I am also considering doing the 4 pipe method over the the OG 2 pipe method. I am concern if there will be drone and if it will be too loud.

copy that. I can't do drone so Ill let you know. Just got back from a drive out to the beach my ears drums are bleeding from running no exhaust

ryguy84 · 07-31-2012, 06:46 PM

So its done just waisted a half tank of gas driving around. There is no drone very stock at highway speeds and around town. But when you lay into it sounds like it should from the factory very c63 like. Im glad I didn't go the acm way for a daily driver. My wife even loves it so all and all its a must mod.

ryguy84 · 07-31-2012, 06:47 PM

Quote:

Originally Posted by ryguy84

So its done just waisted a half tank of gas driving around. There is no drone very stock at highway speeds and around town. But when you lay into it sounds like it should from the factory very c63 like. Im glad I didn't go the acm way for a daily driver. My wife even loves it so all and all its a must mod.

And all that are wondering I had it done at Muffler Works in Petaluma Ca.

ChrisDUS · 08-22-2012, 06:29 AM

Hi,

I have one of the OEM exhaust mods and am very happy with it. A friend has a 1M and wants more sound as well so we were figuring if someone tried the same on a 1M stock exhaust...

Any ideas?

Thanks
Chris

ksflatlander · 08-22-2012, 08:41 AM

Quote:

Originally Posted by ChrisDUS

Hi,

I have one of the OEM exhaust mods and am very happy with it. A friend has a 1M and wants more sound as well so we were figuring if someone tried the same on a 1M stock exhaust...

Any ideas?

Thanks
Chris

I would not assume that the muffler configuration is the same between the two cars given the substantial difference in the powerplants. The concept might still work though - you'd just have to open it up, see what's in there and see if there is a way to cancel a portion (or all -depending on how loud you want it) of the sound absorbing system in there.

Crack her open and let us know what's in there.

ChrisDUS · 08-22-2012, 08:58 AM

Opening it will be the last thing to do, to be honest. Maybe there is already some lessons learned out there.

What I found out in the meantime is that you can use the midpipe section of the N55 engine which has no secondary cats. This is said to be a good improvement for both sound and power delivery.

AcaKayak · 11-04-2012, 01:23 PM

Hi guys, I'm new here and this is my first post

I have one question:

When I drive my car, exhaust is quiet if I don't push car hard, and when I give it power it opens and becomes loud. It's stock exhaust and dealer said that this is normal thing and I like it because it's nice to rest from it sometimes.

If I do this mod, will exhaust stay like this or it will be always loud?

I hope that you guys know what I mean

Zaw · 11-04-2012, 06:50 PM

I went to the same place as ryguy84, I love it. I did all 4 pipes. Loud when you want it to and quite when you are cruising.

gatorfast · 11-04-2012, 08:49 PM

Quote:

Originally Posted by AcaKayak

Hi guys, I'm new here and this is my first post

I have one question:

When I drive my car, exhaust is quiet if I don't push car hard, and when I give it power it opens and becomes loud. It's stock exhaust and dealer said that this is normal thing and I like it because it's nice to rest from it sometimes.

If I do this mod, will exhaust stay like this or it will be always loud?

I hope that you guys know what I mean

It will be noticeably louder both when being gentle and when going WOT. However, the noise will only be on the outside and when driving with windows up it won't sound much different than stock (ie no drone in the cabin).

If you are thinking about it just do it, you won't be disappointed.

Ablahad · 11-05-2012, 01:19 AM

Any shops in San Diego do this mod?

AcaKayak · 11-05-2012, 03:13 PM

Ok, great, I decided to do it

I spoke with service that can get it done and they told me after they watched the video on youtube how to do it that maybe there will be problem with welding down side of new pipe because they are not sure how much space is there.

Is there a problem to weld down side of new pipe or there is enough space to do that?

EliteM3 · 11-05-2012, 04:31 PM

Even if they can't, they will weld ~90% of the pipe all around. anything they miss will still have the pipe overlapped with the connecting pipe.

If you think about it, it will be like having a couple/few holes of perforation...which is a huge difference from the few hundred perforated holes you have now.

You aren't going to notice a difference.

Ablahad · 11-08-2012, 11:51 PM

Or any shops around LA?

Dominic_M · 04-24-2013, 06:37 AM

I am attempting this soon. The results are way too good...
Thanks guys. I may have to pay a shop to do this. I wonder what they will charge... Oh well..

11-04-2012, 01:23 PM	#470
AcaKayak Registered Drives: E92 M3 6MT Join Date: Nov 2012 Location: Serbia Posts: 2 iTrader: (0)	Hi guys, I'm new here and this is my first post I have one question: When I drive my car, exhaust is quiet if I don't push car hard, and when I give it power it opens and becomes loud. It's stock exhaust and dealer said that this is normal thing and I like it because it's nice to rest from it sometimes. If I do this mod, will exhaust stay like this or it will be always loud? I hope that you guys know what I mean Last edited by AcaKayak; 11-04-2012 at 01:31 PM.

11-04-2012, 06:50 PM	#471
Zaw Private Drives: 2011 E90 M3 DCT Competition Join Date: Aug 2010 Location: Studio City, CA Posts: 97 iTrader: (0)	I went to the same place as ryguy84, I love it. I did all 4 pipes. Loud when you want it to and quite when you are cruising. Last edited by Zaw; 11-04-2012 at 11:11 PM.

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07-31-2012, 06:46 PM	#465
ryguy84 Private First Class Drives: looking Join Date: Jun 2010 Location: San Francisco, Ca Posts: 107 iTrader: (0)	So its done just waisted a half tank of gas driving around. There is no drone very stock at highway speeds and around town. But when you lay into it sounds like it should from the factory very c63 like. Im glad I didn't go the acm way for a daily driver. My wife even loves it so all and all its a must mod.

08-22-2012, 06:29 AM	#467
ChrisDUS Private Drives: 2008 M3 E90 Join Date: Apr 2012 Location: Düsseldorf, Germany Posts: 98 iTrader: (0)	Hi, I have one of the OEM exhaust mods and am very happy with it. A friend has a 1M and wants more sound as well so we were figuring if someone tried the same on a 1M stock exhaust... Any ideas? Thanks Chris

08-22-2012, 08:58 AM	#469
ChrisDUS Private Drives: 2008 M3 E90 Join Date: Apr 2012 Location: Düsseldorf, Germany Posts: 98 iTrader: (0)	Opening it will be the last thing to do, to be honest. Maybe there is already some lessons learned out there. What I found out in the meantime is that you can use the midpipe section of the N55 engine which has no secondary cats. This is said to be a good improvement for both sound and power delivery.

11-05-2012, 01:19 AM	#473
Ablahad Enlisted Member Drives: Work Beater Join Date: Sep 2009 Location: San Diego Posts: 37 iTrader: (0)	Any shops in San Diego do this mod?

11-05-2012, 03:13 PM	#474
AcaKayak Registered Drives: E92 M3 6MT Join Date: Nov 2012 Location: Serbia Posts: 2 iTrader: (0)	Ok, great, I decided to do it I spoke with service that can get it done and they told me after they watched the video on youtube how to do it that maybe there will be problem with welding down side of new pipe because they are not sure how much space is there. Is there a problem to weld down side of new pipe or there is enough space to do that?

11-05-2012, 04:31 PM	#475
EliteM3 Private Drives: 2009 E90 M3 Join Date: May 2012 Location: Morgan Hill, CA Posts: 87 iTrader: (0)	Even if they can't, they will weld ~90% of the pipe all around. anything they miss will still have the pipe overlapped with the connecting pipe. If you think about it, it will be like having a couple/few holes of perforation...which is a huge difference from the few hundred perforated holes you have now. You aren't going to notice a difference.

11-08-2012, 11:51 PM	#476
Ablahad Enlisted Member Drives: Work Beater Join Date: Sep 2009 Location: San Diego Posts: 37 iTrader: (0)	Or any shops around LA?

04-24-2013, 06:37 AM	#477
Dominic_M Private First Class Drives: 08 ///M3 Join Date: Feb 2009 Location: Atlanta, GA Posts: 168 iTrader: (0)	I am attempting this soon. The results are way too good... Thanks guys. I may have to pay a shop to do this. I wonder what they will charge... Oh well..