Stock exhaust specifications

Hammer · 12-13-2008, 12:37 PM

Everyone is speaking about aftermarket-exhaust. To have some "facts" to be compared i ´d like to ask this community for some figures to the stock exhaut (loudness standing/moving, weight and so on).

schnell325 · 12-13-2008, 02:05 PM

The stock cat-back is ~55 lbs if I recall.

ChitownM3 · 12-13-2008, 07:00 PM

The stock exhaust is quiet, way too quiet. The car is much more fun to drive since I've added the Remus.

Mischievous M · 12-13-2008, 10:01 PM

Best advice... dump the stock for an after market.

My M3 is approaching a year old next weekend (21st Dec08). While it was stock for 9months i racked up 3657miles. After deciding to spend some dosh on the car in OCT/NOV to fit a Gruppe M intake and Vorsteiner Titanium exhaust, I've racked the car up to 5730miles. Its been sooo pleasurable to drive since the exhaust upgrade.

Am now waiting for the AA X-pipe for the added grunt and minor power gains due in late DEC08 or early JAN09

Go enjoy your M mate

GregW / Oregon · 12-13-2008, 10:21 PM

Quote:

Originally Posted by Hammer

Everyone is speaking about aftermarket-exhaust. To have some "facts" to be compared i ´d like to ask this community for some figures to the stock exhaut (loudness standing/moving, weight and so on).

I weighed the muffler at 43.7# (pipes cut off).

Hammer · 12-14-2008, 02:48 AM

Quote:

Originally Posted by ChitownM3

The stock exhaust is quiet, way too quiet. The car is much more fun to drive since I've added the Remus.

how many db are "quiet" ?

pittsy · 12-14-2008, 02:51 AM

Quote:

Originally Posted by ChitownM3

The stock exhaust is quiet, way too quiet. The car is much more fun to drive since I've added the Remus.

+1, i put the remus on at right after my 1200 miles service and now i have 9,300 after 4 months of owning the car

satinghostrider · 12-14-2008, 07:02 AM

Quote:

Originally Posted by Mischievous M

Best advice... dump the stock for an after market.

My M3 is approaching a year old next weekend (21st Dec08). While it was stock for 9months i racked up 3657miles. After deciding to spend some dosh on the car in OCT/NOV to fit a Gruppe M intake and Vorsteiner Titanium exhaust, I've racked the car up to 5730miles. Its been sooo pleasurable to drive since the exhaust upgrade.

Am now waiting for the AA X-pipe for the added grunt and minor power gains due in late DEC08 or early JAN09

Go enjoy your M mate

Same here. There is just much more sensation with my new ACS exhaust too. Esp blipping to shock ppl.

Hammer · 12-15-2008, 09:57 AM

There are still NO facts about the voiceoutput of the stock exhaut (db-figures)

Anyone knows em? I googled allready without a satisfying result.

satinghostrider · 12-15-2008, 10:19 AM

Quote:

Originally Posted by Hammer

There are still NO facts about the voiceoutput of the stock exhaut (db-figures)

Anyone knows em? I googled allready without a satisfying result.

Yeah i dont think there is official word on the db figure of the stock one. But i realise how much sound this S65B40 is capable of with just an exhaust mod like the ACS race. Its LOUD. I cant stop thinking how much louder it will be without the mid-cats and resonance box.

montreal red · 01-01-2009, 12:39 AM

Quote:

Originally Posted by elmariachi

Yeah i dont think there is official word on the db figure of the stock one. But i realise how much sound this S65B40 is capable of with just an exhaust mod like the ACS race. Its LOUD. I cant stop thinking how much louder it will be without the mid-cats and resonance box.

+1 on this... the M3's engine is capable of some loud noises with just a simple muffler swap... i got magnaflow mufflers on my M and i dont think i can live with a car that's any louder.

biscuits · 01-01-2009, 02:51 PM

Quote:

Originally Posted by Hammer

There are still NO facts about the voiceoutput of the stock exhaut (db-figures)

Anyone knows em? I googled allready without a satisfying result.

At a recent trackday, my stock system was measured at 95dB @ 6000rpm

Not exactly quiet... stock E46 M3 & CSL were comming in under 90dB.

I want more noise low down, not at the top end... not sure which aftermarket system will give me that though.

GregW / Oregon · 01-01-2009, 05:16 PM

Quote:

Originally Posted by Hammer

There are still NO facts about the voiceoutput of the stock exhaut (db-figures)

Anyone knows em? I googled allready without a satisfying result.

From Nate at IND in the Eisenmann thread, these are the figures on the stock exhaust:

moving vehicle = apr. 75 db
stationary vehicle = 92 db at 6.225 1/min
value of backpressure = 0,47 bar at 2. gear and 0,51 bar at 3. gear
weight of the muffler = apr. 21 kg

12-13-2008, 12:37 PM	#1
Hammer Lieutenant 36 Rep 423 Posts Drives: BMW Join Date: Feb 2008 Location: Germany, Cologne iTrader: (0)	Stock exhaust specifications Everyone is speaking about aftermarket-exhaust. To have some "facts" to be compared i ´d like to ask this community for some figures to the stock exhaut (loudness standing/moving, weight and so on).
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12-13-2008, 02:05 PM	#2
schnell325 Bored at work.... 1133 Rep 5,649 Posts Drives: 2016 F82 M4 GTS Join Date: Aug 2007 Location: Comox Valley iTrader: (8)	The stock cat-back is ~55 lbs if I recall. __________________ Grey Matter:2008 E92 M3:608/425. SOLD! Dark Matter:2015 F80 M3:495/505. SOLD! Anti Matter:2016 F82 M4 GTS Light Grey Matter:2025 G20 M340i xDrive
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12-13-2008, 07:00 PM	#3
ChitownM3 Lieutenant 36 Rep 487 Posts Drives: 2001 SS Camaro Join Date: Jun 2007 Location: Burbs of Chicago iTrader: (0)	The stock exhaust is quiet, way too quiet. The car is much more fun to drive since I've added the Remus.
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12-13-2008, 10:01 PM	#4
Mischievous M First Lieutenant 37 Rep 326 Posts Drives: BMW (E92) M3 & 2004 JCW MCS Join Date: Oct 2008 Location: Brunei Darussalam iTrader: (0) Garage List 2008 BMW M3 (E92) [0.00] 2006 Touareg V6 3.2L [0.00] 2004 Mini Cooper S ... [0.00]	Best advice... dump the stock for an after market. My M3 is approaching a year old next weekend (21st Dec08). While it was stock for 9months i racked up 3657miles. After deciding to spend some dosh on the car in OCT/NOV to fit a Gruppe M intake and Vorsteiner Titanium exhaust, I've racked the car up to 5730miles. Its been sooo pleasurable to drive since the exhaust upgrade. Am now waiting for the AA X-pipe for the added grunt and minor power gains due in late DEC08 or early JAN09 Go enjoy your M mate __________________ Warm Regards, Mischievous M No Replacement For Big Displacement!
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12-15-2008, 09:57 AM	#9
Hammer Lieutenant 36 Rep 423 Posts Drives: BMW Join Date: Feb 2008 Location: Germany, Cologne iTrader: (0)	There are still NO facts about the voiceoutput of the stock exhaut (db-figures) Anyone knows em? I googled allready without a satisfying result.
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