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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Fri, Jun-16-2017, 11:26:03 PM   #21
Obioban
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Default Re: My "custom" (stock?) M3 wagon exhaust

Quote:
Originally Posted by T3AMFiSh View Post
Any power loss when you added the e36 rear? Reason I'm asking is because you went from 2.36 to 2.00 piping, plus have you ever seen the inside of the e36 M3 muffler? 4, 180* turns and the piping just before the tips actually necks down to 1.5"

I know this because I just open my muffler and took out the entire guts, and remade the muffler using 2.5" piping and peforated core pipe with stainless packing. The sound is very good and gave a nice "butt dyno" feel up top.

This is my thread here

https://www.bimmerforums.com/forum/s...ttle-different
Honestly, it's hard to tell-- the M3 wagon always feels a bit slow to me, because my M3 coupe is 3150 lbs (and lighter rotating mass) and up almost 100 hp on it. I don't perceive any power loss, but the two very different e46 M3s has decalibrated my butt dyno. If there is, I'm fine with it-- I just don't like loud exhausts, at least on the s54.

That said, Bimmerworks did say that my e36 muffler was different than any other they had seen-- specifically because it had larger pipe. They actually initially grabbed a second one to use, to make a pipe extension, but had to abandon it for some V8 X5 piping because the tubing was too small. They asked me where I got the muffler from because it was unlike previous e36 M3 mufflers they had seen

(I just got it from a local guy that parts out e36 m3s-- it came off a 99 vert).
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Last edited by Obioban; Sat, Jun-17-2017 at 12:22:24 AM.
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Old Sat, Jun-17-2017, 01:41:32 AM   #22
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Default Re: My "custom" (stock?) M3 wagon exhaust

Is that an RMP car behind you?
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Old Sat, Jun-17-2017, 05:10:16 AM   #23
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Default Re: My "custom" (stock?) M3 wagon exhaust

the euro E36 M3 muffler is identical to the US version with the exception that its made in 60mm piping (2.36") so it could be that..

when i opened up my muffler.. the packing was almost dissentigrated into one of the pipes causing a semi-blockage of one of the tubes.. i was really surprised on the size of piping and the actual path of flow on the muffler.. woke up my E36 pretty well after i made the changes to it. there are others in that thread that kinda did what i did but if you do the perforated core tube (acutally motorcycle muffler piping) and use the stainless wool packing (also motorcycle packing).. it sounds really good. and saves about 18lbs of weight.
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Old Sat, Jun-17-2017, 08:24:06 AM   #24
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Default Re: My "custom" (stock?) M3 wagon exhaust

Hrmmm I think I might have to try this
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Old Sat, Jun-17-2017, 09:39:57 AM   #25
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Default Re: My "custom" (stock?) M3 wagon exhaust

for those that dont want to click the link


right here where you can see the 2 "S" bend pipes, those go out to the tips.. those pipes are 1.5" OD..







the only thing you dont see, is the steel wool, i used 15ft of it, wrapped both tubes, loosely not too tight and just stuffed the rest into the cavity...
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Old Sat, Jun-17-2017, 03:09:03 PM   #26
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Default Re: My "custom" (stock?) M3 wagon exhaust

Quote:
Originally Posted by T3AMFiSh View Post
for those that dont want to click the link


right here where you can see the 2 "S" bend pipes, those go out to the tips.. those pipes are 1.5" OD..







the only thing you dont see, is the steel wool, i used 15ft of it, wrapped both tubes, loosely not too tight and just stuffed the rest into the cavity...
Those images aren't viewable unless you're signed into bimmerforums.
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Old Sat, Jun-17-2017, 03:26:44 PM   #27
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Default Re: My "custom" (stock?) M3 wagon exhaust

Quote:
Originally Posted by T3AMFiSh View Post
for those that dont want to click the link


right here where you can see the 2 "S" bend pipes, those go out to the tips.. those pipes are 1.5" OD..







the only thing you dont see, is the steel wool, i used 15ft of it, wrapped both tubes, loosely not too tight and just stuffed the rest into the cavity...
I have zero desire to add any amount of loudness, so I don't think I'll be going this route.

Any idea what the OD of the euro or US piping is going into the muffler? I'd like to stick a caliper on it to determine which I have...
(not that I'm likely to change it either way, I just want to know)
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Last edited by Obioban; Sat, Jun-17-2017 at 03:44:00 PM.
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Old Sat, Jun-17-2017, 06:27:27 PM   #28
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Default Re: My "custom" (stock?) M3 wagon exhaust

Quote:
Originally Posted by T3AMFiSh View Post
Any power loss when you added the e36 rear? Reason I'm asking is because you went from 2.36 to 2.00 piping, plus have you ever seen the inside of the e36 M3 muffler? 4, 180* turns and the piping just before the tips actually necks down to 1.5"

I know this because I just open my muffler and took out the entire guts, and remade the muffler using 2.5" piping and peforated core pipe with stainless packing. The sound is very good and gave a nice "butt dyno" feel up top.

This is my thread here

https://www.bimmerforums.com/forum/s...ttle-different
Just confirmed with Chris (did the work)-- the piping on this e36 muffler was 60mm (2.36"). Not 2"
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Old Sat, Jun-17-2017, 07:22:27 PM   #29
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Default Re: My "custom" (stock?) M3 wagon exhaust

Such an awesome idea, executed perfectly!

Quote:
Originally Posted by bmw m3 s50 View Post

I was under the impression that the US spec exhaust piping diameter was 2.25" while the euro exhaust piping diameter was the same as the e46 at 2.36".

Quote:
Originally Posted by ZiMMie View Post
Euro mufflers are different internally compared to US spec. I've had 3 and 2euro mufflers. All used.

The us mufflers kept coming loose internally (rattling) after a few km. Euro will last longer. Ended up buying a new euro 3.2 muffler which is different from the 3.0 internally.
US 3.0 mufflers were different (internals and pipe sizing) than 3.2.

Euro piping is always larger and has a unique center section, but the mufflers were the same -respectively- except for the necking down of the flange to mate to smaller US mid pipes (aka 325/328 parts).

Supersprint does the same exact thing with their mufflers. Only difference between US spec and Euro is the flange size. Otherwise they are all Euro sized ~4" after the inlet.
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Old Tue, Jun-20-2017, 09:00:21 PM   #30
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Default Re: My "custom" (stock?) M3 wagon exhaust

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Originally Posted by twentyseven View Post
Such an awesome idea, executed perfectly!






US 3.0 mufflers were different (internals and pipe sizing) than 3.2.

Euro piping is always larger and has a unique center section, but the mufflers were the same -respectively- except for the necking down of the flange to mate to smaller US mid pipes (aka 325/328 parts).

Supersprint does the same exact thing with their mufflers. Only difference between US spec and Euro is the flange size. Otherwise they are all Euro sized ~4" after the inlet.
I have Dynos to prove to it. I gain a shit load from an ss mid and new muffler than the us muffler with e46 Center. I'll post it when I get a chance.

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Discussing My "custom" (stock?) M3 wagon exhaust in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)