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Old 03-22-2013, 04:34 PM   #1
dcramer
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options for catback exhaust for euro midpipe

So I have an e36 euro midpipe with my S50B32 ( found out I should have gotten the whole exhaust) I asked the local muffler guy if he could expand my M3 exhaust inlet but it is stainless, he said it would just crack.

Can it be cut and welded ?

What other catbacks are available in Canada ?

Dave
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Old 03-22-2013, 05:58 PM   #2
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i'd run the correct sized catback. lots of stuff is available in canada, and the s50b32 sounds amazing no matter what (magnaflow = awesome)
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Old 03-22-2013, 06:07 PM   #3
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The stock M3 muffler actually has (had) 60mm inlets they are actually shrunk to fit the North American midpipe. Seems like a waste to throw out a perfectly good catback
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Old 03-22-2013, 07:11 PM   #4
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try to find some larger flanges and have them welded on? what size piping does the s50 use, 2X2.5?
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Old 03-22-2013, 07:41 PM   #5
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It uses 60mm or approx 2 3/8 and yes this is what I was thinking of doing. Cost of a catback is at least 500, getting mine welded can't be that much
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Last edited by dcramer; 03-22-2013 at 07:42 PM. Reason: add some detail
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Old 03-23-2013, 05:55 AM   #6
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1000 bucks for a magnaflow catback ????
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Old 03-23-2013, 11:57 AM   #7
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My NA muffler is exactly the same size piping as the midpipe, except for a small restriction where it bolts to the midpipe. Did the EURO mufflers have even bigger piping ?
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Old 03-23-2013, 11:59 AM   #8
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^ No its the same. Just cut it out there and make new flanges for it it will be fine.
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Old 03-23-2013, 12:11 PM   #9
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I'm up in Orangeville, so finding someone to do that is tough. Any recommendations for someone to do this ?
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Old 03-23-2013, 12:18 PM   #10
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Any muffler shop can do it. its not hard.
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Old 03-23-2013, 03:27 PM   #11
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^ No its the same. Just cut it out there and make new flanges for it it will be fine.
for sure? I have a memory of lining them up and the piping being way bigger. Am I only thinking about the midpipe? Also, there were a ton of people that wanted to buy the euro muffler from me and I sold them for big $$...why would they have been in such high demand if they were the same. I'm pretty sure that they were also heavier than the NA one...
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Old 03-23-2013, 04:24 PM   #12
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for sure? I have a memory of lining them up and the piping being way bigger. Am I only thinking about the midpipe? Also, there were a ton of people that wanted to buy the euro muffler from me and I sold them for big $$...why would they have been in such high demand if they were the same. I'm pretty sure that they were also heavier than the NA one...
NA M3 3.2: http://realoem.com/bmw/showparts.do?...15&hg=18&fg=20

Euro M3 3.2: http://realoem.com/bmw/showparts.do?...15&hg=18&fg=20

The mufflers are different, but look at the gasket rings (#3, #4). They are common between the two. Smaller of the two is 68mm ID. Only BMWs that share these rings besides the E36 M3s are the Z3M, Z4M, and E46 M3.
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Old 03-23-2013, 04:30 PM   #13
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Quote:
Originally Posted by kruler View Post
for sure? I have a memory of lining them up and the piping being way bigger. Am I only thinking about the midpipe? Also, there were a ton of people that wanted to buy the euro muffler from me and I sold them for big $$...why would they have been in such high demand if they were the same. I'm pretty sure that they were also heavier than the NA one...
why because NA bmw owners love to put euro this euro that on thier mod list .

Ive gutted both mufflers and the EURO has a top 3 roll pipe layout whiles the US has only 2. SAME diameter on the inside. if you look at it its more it seems to me that they did 3 pipes to reduce the noise the motor puts out. not horse power. so i dunno why people thinks its light. if anything it alittle heavier.

If op cuts out the cuts out the smaller flanges on the pipe, the pipes turns into 60MM all the way thru.

I doubt he will loose any power at all with the muffler, but then again i'm not an engineer so what do i know...
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Last edited by ZiMMie; 03-23-2013 at 04:35 PM.
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Old 03-23-2013, 05:07 PM   #14
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Originally Posted by ZiMMie View Post
Ive gutted both mufflers and the EURO has a top 3 roll pipe layout whiles the US has only 2. SAME diameter on the inside. if you look at it its more it seems to me that they did 3 pipes to reduce the noise the motor puts out. not horse power. so i dunno why people thinks its light. if anything it alittle heavier.
Here is a euro-spec exhaust


Are you saying that US spec only has two pipes?


edit

Found this image of the US exhaust.


Also this

http://forums.bimmerforums.com/forum...3-euro-headers

edit #2

3.0l and 3.2l cat-backs are different, so can't really compare those two photos.
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Old 03-23-2013, 07:00 PM   #15
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from waht ive seen the euro is slightly bigger....

also dont be fooled by the double walled piping on the midpipe. the inner diameter is less.

both mufflers reduce inside the muffler down considerably. but this is to keep the cooled exhaust velocity up. If I was op I would just get an after market unit and call it a day unless you are hell bent on having that 1000lb euro behive.
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