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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, 01:59:35 PM   #1
Obioban
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Default My "custom" (stock?) M3 wagon exhaust

Picked up the car, with the e36 M3 muffler installed, from Bimmerworks (West Chester, PA), who did kick ass work (as always).

The result was EXACTLY what I was hoping it would be-- as quiet as the stock e46 m3 muffler and zero drone, under any conditions. It actually seems to have a bit less rasp, too! (better, imo). Will post a video at a later date. Not sure if it'll be before or after I do euro headers/catted section 1/tune.

My request to them were...
-stock tip location
-stock section 2 merge point retained
-bolts up to stock section 1 like stock
-if possible, retain the stock section 2 resonator
-use OE hangers for future serviceability

Pictures of the process...

Test fitting





Stock e46 m3 cut off after the resonator. Fun how the e46 M3 doesn't use round pipe while the e36 m3 muffler does :P. They had to reshape the e36 pipe to match.





e36 m3 muffler with the necked down portion cut off. The e36 euro (s50B32) and US (S52B32) muffler are both the same, other than the necked down portion where it joins with the mid pipes. My thought going in this project is that if it flows well enough for the 321hp 7600rpm S50B32, it should be okay with a 343hp, 8000rpm S54B32. Butt dyno says that assumption was accurate.



e36 M3 muffler welded up to the e46 M3 section 2, with e46 non M hanger mount points added. The muffler body was painted black to minimize the saggy muff/full udder look that e36 M3's sometimes have from behind/side.



And installed!





The muffler body is above the line between the tip of the exhaust pipes and the tires, so my departure angle shouldn't have been adversely affected.
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Old Fri, Jun-16-2017, 02:14:27 PM   #2
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Default Re: My "custom" (stock?) M3 wagon exhaust

Is the stock resonator internal just straight through perf all the way? How's she sound?
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Old Fri, Jun-16-2017, 02:15:47 PM   #3
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Default Re: My "custom" (stock?) M3 wagon exhaust

Quote:
Originally Posted by aznbo187 View Post
Is the stock resonator internal just straight through perf all the way? How's she sound?
Yes.

And, wonderful-- like a stock M3 with a bit less rasp.
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Old Fri, Jun-16-2017, 02:28:05 PM   #4
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Default Re: My "custom" (stock?) M3 wagon exhaust

Get that tint fixed man! Lol

Looks amazing!
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Old Fri, Jun-16-2017, 02:38:06 PM   #5
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Default Re: My "custom" (stock?) M3 wagon exhaust

Bimmerworks does phenomenal work. Can't wait to hear a sound clip!
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Old Fri, Jun-16-2017, 02:38:30 PM   #6
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Default Re: My "custom" (stock?) M3 wagon exhaust

Quote:
Originally Posted by tjkenny15 View Post
Get that tint fixed man! Lol

Looks amazing!
It's on the to do list for sure. There's just more pressing projects
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Old Fri, Jun-16-2017, 04:54:02 PM   #7
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Default Re: My "custom" (stock?) M3 wagon exhaust

I love wagens with an attitude
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Old Fri, Jun-16-2017, 05:02:29 PM   #8
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Default Re: My "custom" (stock?) M3 wagon exhaust

Looks good!
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Old Fri, Jun-16-2017, 07:35:25 PM   #9
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Default Re: My "custom" (stock?) M3 wagon exhaust

Sound clips whenever you get a chance.

Does the car have LSD? If so, might as well hit two birds at the same time.
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Old Fri, Jun-16-2017, 07:51:14 PM   #10
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Default Re: My "custom" (stock?) M3 wagon exhaust

So it worked huh? Like I had said before in the other thread, I have an overwhelming feeling that you won't have any issues since the e36 and e46 had very similar exhaust routes. I knew any good exhaust shop would be able to do it, bimmerworks being one of them. Who did the work, Steve or Chris?

You have to some day get that Supersprint muffler we had discussed. Should be able to free up some additional HP, while being on the quiet side also lighter then the heavy OEM muffler.

You were smart to retain that same e46 M3 X - resonator. Every little bit helps.
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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)