M3 exhaust modification

kcdude24 · 10-14-2011, 03:21 PM

Just got my second one done and like it a tad bit better. Opened from the top and the large pipes replaced versus covered. Thought about coating it black but couldn't stand not hearing it so I installed it last night.

bigtex · 10-14-2011, 08:49 PM

Had this mod done today. 4 hour procedure. Opened from the top and had them split a pipe in half and weld around large perforated pipes. Sounds amazing when getting on it but quiet as stock when cruising. No drone whatsoever. Could not be happier. Best money spent so far on car.

Raptor251 · 10-15-2011, 09:30 PM

So I decided I would try this mod today especially since I have an extra OE exhaust. (Oh and I also happen to know how to build off-road race cars and have a full shop at hand) So It took me about an hr to do the mod start to finish. I welded tubing over the perf. sections, re-stuffed the can and welded it shut. Its no fun welding the stock can back together because it is so dam thin.

All I can say is that I wasted my time. It is only a tiny bit louder and I covered everything there is to cover inside there! It sounds really good with no drone, just way too quiet. The sound is really amazing through every gear and it looks 100% stock. I want my car to be loud, this isnt the thing for me. If anyone has a loud exhaust that they cant stand PLEASE trade me plus cash!

JCtx · 10-15-2011, 11:19 PM

Quote:

Originally Posted by Raptor251

All I can say is that I wasted my time.

Hey, just sent you a PM to have dibs on your modded exhaust if you sell it and ship it

. Your best bet is to sell it and buy a Megan exhaust for $500. Good luck.

Oh, do you have a vid of your modded exhaust?

Just to make sure you didn't screw it up

. Just kidding man.

M3+ · 10-16-2011, 12:19 AM

Quote:

Originally Posted by Raptor251

So I decided I would try this mod today especially since I have an extra OE exhaust. (Oh and I also happen to know how to build off-road race cars and have a full shop at hand) So It took me about an hr to do the mod start to finish. I welded tubing over the perf. sections, re-stuffed the can and welded it shut. Its no fun welding the stock can back together because it is so dam thin.

All I can say is that I wasted my time. It is only a tiny bit louder and I covered everything there is to cover inside there! It sounds really good with no drone, just way too quiet. The sound is really amazing through every gear and it looks 100% stock. I want my car to be loud, this isnt the thing for me. If anyone has a loud exhaust that they cant stand PLEASE trade me plus cash!

STRAIGHT PIPE WITH 20 1/4'' HOLES AFTER THE HELMHOLTZ & INTO THE SPLIT
TINY BIT OF DRONE BUT MUCH LOUDER

Raptor251 · 10-16-2011, 07:23 AM

Im gonna stop wasting my time with the really ugly and heavy stock setup. Im gonna buy a real exhaust that I can actually hear.

And FYI, I covered every single hole in the muffler with some really trick stainless steel covers that I made and then Tig'ed everything into place.

snowmants · 10-16-2011, 11:51 AM

be sure to stand behind the car and have someone else rev it. also might be interesting to have someone else drive your car while you follow in another car with your windows down. It is much louder than it seems when you are inside the car. BMW did a good job with sound deadening, making it very deceptive when you are driving.

bigjae1976 · 10-16-2011, 01:27 PM

Pardon my stupid question...will an E92 muffler bolt up to an E90? Is the only issue that the tips will stick out a little bit?

Raptor251 · 10-16-2011, 11:52 PM

I drove the car around a little more and I must say it sounds really good. I personally just want it louder.

On another I put a half tank of 100 octane gas in with a half tank of 91 and OMG!!! The car is insane, this is by far the best mod you could do. The car feels faster with the mixed octane gas than my old car with all the Dinan stuff and 91 octane!

1sikbmr · 10-17-2011, 12:39 AM

Quote:

Originally Posted by bigjae1976

Pardon my stupid question...will an E92 muffler bolt up to an E90? Is the only issue that the tips will stick out a little bit?

yes tips will be longer. No other issues

bigjae1976 · 10-17-2011, 09:40 AM

Quote:

Originally Posted by 1sikbmr

yes tips will be longer. No other issues

Thanks!

Bubbles · 10-17-2011, 10:30 AM

Quote:

Originally Posted by Raptor251

I drove the car around a little more and I must say it sounds really good. I personally just want it louder.

On another I put a half tank of 100 octane gas in with a half tank of 91 and OMG!!! The car is insane, this is by far the best mod you could do. The car feels faster with the mixed octane gas than my old car with all the Dinan stuff and 91 octane!

Louder? This mod is plenty loud.

Raptor251 · 10-17-2011, 01:02 PM

Well for me personally I want it loud. My M is not my daily driver and is more or less my toy. I drive the car when I want to have fun. Im not worried about upsetting my neighbors with early am cold starts or worried about the local sheriff. This is my modern day "hotrod" if you will. With that said I dont want it loud just for the sake of being loud. I want it to sound like that race car it wants to be. I already know I have to delete the cats at the very least as this is not my first time around.

Superfly_M3 · 10-20-2011, 02:19 AM

Quote:

Originally Posted by 1sikbmr

yes tips will be longer. No other issues

How much longer are we talking about? I can't seem to find a stock E90 exhaust. Anyone have one? PM me.

1sikbmr · 10-20-2011, 07:43 AM

Quote:

Originally Posted by Superfly_M3

How much longer are we talking about? I can't seem to find a stock E90 exhaust. Anyone have one? PM me.

about 2 inches.

Ali.K_BMW · 10-24-2011, 10:52 AM

Anyone in the NJ - PA area want to do this mod for me?

Crimson92 · 10-24-2011, 01:49 PM

anybody have this done locally in sd?

Bart@AUTOcouture · 10-26-2011, 09:23 AM

I will be doing this mod today/tomorrow. If anyone in the Tri-state area is interested, swing by next week

Jive · 10-28-2011, 01:24 AM

Quote:

Originally Posted by kcdude24

Just got my second one done and like it a tad bit better. Opened from the top and the large pipes replaced versus covered. Thought about coating it black but couldn't stand not hearing it so I installed it last night.

How did you mod this? Did you remove the sound deadening material? Is with the exhaust going directly to the tips (rather then crossing over)? sounds amazing, exactly something i would want to do.

kcdude24 · 10-28-2011, 05:49 PM

Quote:

Originally Posted by Jive

How did you mod this? Did you remove the sound deadening material? Is with the exhaust going directly to the tips (rather then crossing over)? sounds amazing, exactly something i would want to do.

Same as others...larger perforated pipes replaced not covered then repacked and sealed. Thanks.

jdz724 · 11-09-2011, 09:14 PM

Quote:

Originally Posted by bigtex

I found a top notch shop in the DFW area of Texas who has worked on my cars before and can do the mod. If anyone is interested please PM me and maybe I can get us a group rate. I would like to get this done within the next two weeks. Thanks

hey bigtex. where in dfw were you about to find a shop to do this. I called around and couldnt get anyone to do it for a decent price

CFM3 · 11-17-2011, 09:22 AM

Is there any potential downside to this mod, such as would covering the perforation impact heat dissipation?

10-14-2011, 03:21 PM	#397
kcdude24 First Lieutenant 6 Rep 324 Posts Drives: 2011 M3 Join Date: Feb 2010 Location: Kansas City iTrader: (2)	Just got my second one done and like it a tad bit better. Opened from the top and the large pipes replaced versus covered. Thought about coating it black but couldn't stand not hearing it so I installed it last night. Attached Images
	Appreciate 0 Quote

10-14-2011, 08:49 PM	#398
bigtex Private First Class 30 Rep 163 Posts Drives: 2013 BMW M5 - sold Join Date: Jun 2011 Location: Texas iTrader: (2)	Had this mod done today. 4 hour procedure. Opened from the top and had them split a pipe in half and weld around large perforated pipes. Sounds amazing when getting on it but quiet as stock when cruising. No drone whatsoever. Could not be happier. Best money spent so far on car. __________________ 2013 M5 - sold 2011 E90 M3 - Sold
	Appreciate 0 Quote

10-15-2011, 09:30 PM	#399
Raptor251 ESS Dreaming 27 Rep 870 Posts Drives: 2011.5 e92 m3/Ford Raptor 6.2 Join Date: Jan 2011 Location: San Diego iTrader: (1)	So I decided I would try this mod today especially since I have an extra OE exhaust. (Oh and I also happen to know how to build off-road race cars and have a full shop at hand) So It took me about an hr to do the mod start to finish. I welded tubing over the perf. sections, re-stuffed the can and welded it shut. Its no fun welding the stock can back together because it is so dam thin. All I can say is that I wasted my time. It is only a tiny bit louder and I covered everything there is to cover inside there! It sounds really good with no drone, just way too quiet. The sound is really amazing through every gear and it looks 100% stock. I want my car to be loud, this isnt the thing for me. If anyone has a loud exhaust that they cant stand PLEASE trade me plus cash!
	Appreciate 0 Quote

10-16-2011, 07:23 AM	#402
Raptor251 ESS Dreaming 27 Rep 870 Posts Drives: 2011.5 e92 m3/Ford Raptor 6.2 Join Date: Jan 2011 Location: San Diego iTrader: (1)	Im gonna stop wasting my time with the really ugly and heavy stock setup. Im gonna buy a real exhaust that I can actually hear. And FYI, I covered every single hole in the muffler with some really trick stainless steel covers that I made and then Tig'ed everything into place.
	Appreciate 0 Quote

10-16-2011, 11:51 AM	#403
snowmants Captain 46 Rep 637 Posts Drives: '06S2K,'11EVO,'11Jeep,'13GL450 Join Date: Mar 2011 Location: Charlottesville, VA iTrader: (1) Garage List 2008 BMW E90 M3 [10.00]	be sure to stand behind the car and have someone else rev it. also might be interesting to have someone else drive your car while you follow in another car with your windows down. It is much louder than it seems when you are inside the car. BMW did a good job with sound deadening, making it very deceptive when you are driving. __________________ '06 Honda S2000 #555 TT5 '16 Porsche GT4
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10-16-2011, 01:27 PM	#404
bigjae1976 Major General 1570 Rep 8,075 Posts Drives: 11 E90 M3 Individual Join Date: Mar 2006 Location: Houston, TX iTrader: (22) Garage List 2004 BMW M3 [4.50] 2011 BMW E90 M3 [5.25] 2013 BMW 328i [5.00]	Pardon my stupid question...will an E92 muffler bolt up to an E90? Is the only issue that the tips will stick out a little bit? __________________ 2018 F30 320iX Melbourne Red 2011 E90 M3 Monte Carlo Blue 2004 E46 M3 Imola Red 2000 E36/7 Z3 Steel Blue
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10-16-2011, 11:52 PM	#405
Raptor251 ESS Dreaming 27 Rep 870 Posts Drives: 2011.5 e92 m3/Ford Raptor 6.2 Join Date: Jan 2011 Location: San Diego iTrader: (1)	I drove the car around a little more and I must say it sounds really good. I personally just want it louder. On another I put a half tank of 100 octane gas in with a half tank of 91 and OMG!!! The car is insane, this is by far the best mod you could do. The car feels faster with the mixed octane gas than my old car with all the Dinan stuff and 91 octane!
	Appreciate 0 Quote

10-17-2011, 01:02 PM	#409
Raptor251 ESS Dreaming 27 Rep 870 Posts Drives: 2011.5 e92 m3/Ford Raptor 6.2 Join Date: Jan 2011 Location: San Diego iTrader: (1)	Well for me personally I want it loud. My M is not my daily driver and is more or less my toy. I drive the car when I want to have fun. Im not worried about upsetting my neighbors with early am cold starts or worried about the local sheriff. This is my modern day "hotrod" if you will. With that said I dont want it loud just for the sake of being loud. I want it to sound like that race car it wants to be. I already know I have to delete the cats at the very least as this is not my first time around.
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10-24-2011, 10:52 AM	#412
Ali.K_BMW Colonel 111 Rep 2,164 Posts Drives: 2020 BMW 330i xDrive Join Date: Aug 2008 Location: United States iTrader: (7) Garage List 2013 BMW 335i [0.00]	Anyone in the NJ - PA area want to do this mod for me? __________________ Former BMW Client Advisor
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10-26-2011, 09:23 AM	#414
Bart@AUTOcouture BimmerPost Supporting Vendor 1006 Rep 4,619 Posts Drives: F95X5M \| E46M3 \| E92M3 \| E60M5 Join Date: Feb 2006 Location: South Florida iTrader: (5)	I will be doing this mod today/tomorrow. If anyone in the Tri-state area is interested, swing by next week
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11-17-2011, 09:22 AM	#418
CFM3 Second Lieutenant 57 Rep 291 Posts Drives: M6 Join Date: Jul 2008 Location: ATL iTrader: (3)	Is there any potential downside to this mod, such as would covering the perforation impact heat dissipation? __________________ 2020 X3M Competition 991 911 Carrera GTS Previous BMW: 2016 X5 M-sport 50, 2013 M6 AW/Black, 2012 X5M AW/Black, 2011 M3, 2008 335i, 2006 M3, 2008 335i, 2002 M3, 2002 330ci, 1997 M3
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