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Thread: Exhaust Systems

  1. #1
    Join Date
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    1991 BMW 850i

    Exhaust Systems

    Are there any exhaust systems for the E31 or do you have to get it custom built?

  2. #2
    Join Date
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    11/88 E32 750iL+98 E36M3
    More details please, from.... to....? Including manifold? Cats? Examples
    supersprint https://www.supersprint.com/ww-en/bm...-90--1094.aspx
    http://www.modbargains.com/BMW-E31-Exhaust.htm
    Remus http://www.bekkers.com/Merchant2/mer...=089188-0550LR
    Engl has various options, and the quality is top http://www.engl-production.de/engl-auspuff-system.html
    SHOGUN'S TRICKS AND TIPS FOR THE SEVEN SERIES
    http://twrite.org/shogunnew/topmenu.html

  3. #3
    Join Date
    Oct 2016
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    Shoreview MN
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    134
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    2001 525it, 1991 850

    Exhaust

    Quote Originally Posted by rodneyngo View Post
    Are there any exhaust systems for the E31 or do you have to get it custom built?
    Mine came with the Remus. I think its fine, wife thinks its to loud, your mileage may vary

  4. #4
    Join Date
    Dec 2007
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    '93 850Ci- Daily Driver
    Yes
    '93 850Ci - Mineralweiss Metallic
    ALPINA B7 -Alpinweiss III

    BMWCCA E31 Chapter President



    ...the price of cool ain't cheap!

  5. #5
    Join Date
    Oct 2018
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    San Jose
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    1991 BMW 850i
    I am just trying to find something that screams in the high RPMs but is subtle in the lower ranges.

  6. #6
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    Mclean, VA
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    1992 850i, 2015 M5
    Quote Originally Posted by rodneyngo View Post
    I am just trying to find something that screams in the high RPMs but is subtle in the lower ranges.
    I switched from Remus to Supersprint. Its deep and throaty but no scream.
    Remus was to muted and aesthetically, I couldn't get used to the sideways looking pipes

    Sent from my SM-G965U using Tapatalk

  7. #7
    Join Date
    Dec 2007
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    '93 850Ci- Daily Driver
    Custom Pipes with MAGNAFLOW cans - less than $500 will get you what you need.
    '93 850Ci - Mineralweiss Metallic
    ALPINA B7 -Alpinweiss III

    BMWCCA E31 Chapter President



    ...the price of cool ain't cheap!

  8. #8
    Join Date
    Oct 2018
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    San Jose
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    My Cars
    1991 BMW 850i
    Do you have any exhaust videos? I cant seem to find any supersprint exhaust videos for the 850i. What do you think about eisenmann?

  9. #9
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    1994 840Ci - M60, 6MT
    Quote Originally Posted by rodneyngo View Post
    I am just trying to find something that screams in the high RPMs but is subtle in the lower ranges.
    I'm in the process of working with my mechanic/workshop to develop a bolt-on stainless steel exhaust solution for the E31, even with shipping it should be affordable (at least definitely more affordable than Supersprint/Eisenmann options!).
    My wishlist is for it to be a high-pitched sound, like the more exotic Maserati V8.

  10. #10
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    Oct 2018
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    1991 BMW 850i
    How much do you think it will cost if you were to sell? Since you have a v8, the sound won’t be the same as a v12.

  11. #11
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    Quote Originally Posted by rodneyngo View Post
    How much do you think it will cost if you were to sell? Since you have a v8, the sound won’t be the same as a v12.
    Not sure yet but the aim is to be under $1000. And yes, we're aware of the V8 vs V12 difference, the plan is to use 2.25" on the V8 and 2.5" on the V12 with a tuned X-pipe.

  12. #12
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    Sep 2018
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    Belgium
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    1990 850i and 1970 2800C
    Quote Originally Posted by TxGR8White View Post
    Custom Pipes with MAGNAFLOW cans - less than $500 will get you what you need.
    That's what we did , just before the SC install. Headers and down pipes are still oem… at the flanges we went with just a bit bigger bends ( that could be welded on those flanges ) and after those again bigger all the way.

    uitlaat850 001.jpg850uitlaat 002.jpg

  13. #13
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    6.5 second 69 Camaro
    Looks nice, How does it sound?
    Last edited by 8eights; 11-06-2018 at 01:45 AM.

  14. #14
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    1990 850i and 1970 2800C
    sorry , we did not dyno before the exhaust build. With the custom exhaust we had 286 HP / 420 NM . That with a ( manual ) '90 , 140K kilometers. But that doesn't say much , as afterwards , during SC install , we suspected bad ignition , so complete new now , and more... a "bad" ECU , as we had now recently improvement with "new" ECU's . Not bad i think , here at the dyno they never have seen a oem 850i above 300 HP.
    After that pic we put extra cans between the X piece and rear ones with some cutouts of the damper material to clear the differential.
    When on the lift i can take a pic.
    Sorry , have no video for the sound.... but for me it's nice , not to loud , despite all flow trough cans.

  15. #15
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    Nov 2013
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    97 850CI
    Quote Originally Posted by rjjablo View Post
    Mine came with the Remus. I think its fine, wife thinks its to loud, your mileage may vary
    If your wife thinks it is too loud, you are on the right path.
    Desecrator of all things Sacred

  16. #16
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    Netherlands
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    E34 M5, Alpina B10, 850i
    Quote Originally Posted by Belgiumbarry View Post
    sorry , we did not dyno before the exhaust build. With the custom exhaust we had 286 HP / 420 NM . That with a ( manual ) '90 , 140K kilometers. But that doesn't say much , as afterwards , during SC install , we suspected bad ignition , so complete new now , and more... a "bad" ECU , as we had now recently improvement with "new" ECU's . Not bad i think , here at the dyno they never have seen a oem 850i above 300 HP.
    After that pic we put extra cans between the X piece and rear ones with some cutouts of the damper material to clear the differential.
    When on the lift i can take a pic.
    Sorry , have no video for the sound.... but for me it's nice , not to loud , despite all flow trough cans.
    Hi Barry,

    Could you give an estimate of cost for your custom pipes? We're looking to get some other exhaust, but the prices I've heard up till now (in NL) are through the roof.

    Since you name your pics "uitlaat" I think you're not so far away from the Netherlands

    Cheers!

  17. #17
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    1990 850i and 1970 2800C
    Hi Ohnizz, yes, i'm flemish , near Ghent.
    I didn't calculate the total cost but wasn't that expensive.... i bought all items at Biesheuvel , who i know from years when i build my '70 2800 CS rally car .
    Here you have all items and price…. depending the diameter you want to go.
    https://www.biesheuvel.nl/automotive...eel-staal.html


    And of course a lot of welds to do ….. but i have a friend "welder" .Count sure a full day welding , yourself cutting and measuring…. best on a lift , wouldn't do it on the ground.
    Last edited by Belgiumbarry; 10-28-2018 at 07:33 AM.

  18. #18
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    1990 850i and 1970 2800C
    here you can see we added extra cans to our first setup as pic above. I didn't wanted it to be to loud, you want a normal conversation in the car , radio etc... loud is sporty , but get's annoying very rapidly. You also see the little welded cut out to clear the differential.
    Extra O2 sensors are for the dual Lambda gauge in the car as we must map the right A/F now with the SC and bigger injectors .
    We went bigger diameter as 0.5 bar boost gives 1.5 times as much exhaust gasses ….to keep back pressure low.




    Attachment 639491Attachment 639492SAM_2561.jpgSAM_2562.jpgSAM_2563.jpg
    Last edited by Belgiumbarry; 10-28-2018 at 08:08 AM.

  19. #19
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    Quote Originally Posted by rodneyngo View Post
    Are there any exhaust systems for the E31 or do you have to get it custom built?

    If you haven't bought something by Christmas check ECS Tuning (no affiliation) for their "Black Friday" sale. Last year all Super Sprint was 50% off....that's when I bought mine.
    1993 850Ci.....161,000 miles and counting!

  20. #20
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    840 528 e36 M3 328 332ti
    Quote Originally Posted by tangcla View Post
    I'm in the process of working with my mechanic/workshop to develop a bolt-on stainless steel exhaust solution for the E31, even with shipping it should be affordable (at least definitely more affordable than Supersprint/Eisenmann options!).
    My wishlist is for it to be a high-pitched sound, like the more exotic Maserati V8.
    Wish I could get my 8 to sound like my Quattroporte S let me know how you make out

  21. #21
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    Quote Originally Posted by Taki840 View Post
    Wish I could get my 8 to sound like my Quattroporte S let me know how you make out
    Will do.
    We have Australia's first 8-fest next week so I'll be getting my car back for that - exhaust will probably not be finalised by then, but will get an idea of how it sounds before adjustment/tuning.

  22. #22
    Join Date
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    1991 BMW 850i
    Dang i just bought my e31 last month :0

    - - - Updated - - -

    Quote Originally Posted by rodneyngo View Post
    Are there any exhaust systems for the E31 or do you have to get it custom built?
    Does anyone know where i can purchase a custom “plug and play” xpipe?

  23. #23
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    Quote Originally Posted by rodneyngo View Post
    Does anyone know where i can purchase a custom “plug and play” xpipe?
    My mechanic is planning on making one to bolt on to the stock headers and exhaust section. That's the plan.

  24. #24
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    In for more info.

    My E31 came with Magnaflow cans. But horrible exhaust tips. It gargles nicely, but me being the person I am, I want it a bit louder. So far eisenmann exhaust (race version) peaked my interest but its close to $2,000 USD just for 2 mufflers pretty much. I also was told about a good exhaust shop not to far from where I live, so now im currently trying to piece a custom exhaust together. Not sure what mufflers to go with. I originally thought about leaving the magnaflow boxes but adding electronic cut outs so I can control the exhaust with remote if i wanted to.

    I am thinking about doing a cat delete and maybe just maybe getting those headers from supersprint for my M70. I gotta figure out if a supercharger will be worth it as I got a 1991 850i auto (i hear the 4 speeds can handle a good amount of power) and go from there. But before then Im gonna have to scoop some Wokee chips.

  25. #25
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    1991 BMW 850i
    Quote Originally Posted by Kamiler View Post
    In for more info.

    My E31 came with Magnaflow cans. But horrible exhaust tips. It gargles nicely, but me being the person I am, I want it a bit louder. So far eisenmann exhaust (race version) peaked my interest but its close to $2,000 USD just for 2 mufflers pretty much. I also was told about a good exhaust shop not to far from where I live, so now im currently trying to piece a custom exhaust together. Not sure what mufflers to go with. I originally thought about leaving the magnaflow boxes but adding electronic cut outs so I can control the exhaust with remote if i wanted to.

    I am thinking about doing a cat delete and maybe just maybe getting those headers from supersprint for my M70. I gotta figure out if a supercharger will be worth it as I got a 1991 850i auto (i hear the 4 speeds can handle a good amount of power) and go from there. But before then Im gonna have to scoop some Wokee chips.
    I just checked out my exhaust system last weekend and discovered that I also have maganflow cans. Its welded on with the stock exhaust tips. If I were to get eisenmann or any of the other exhaust systems would i have to cut off the maganas and weld on new flanges?

    - - - Updated - - -

    Quote Originally Posted by tangcla View Post
    My mechanic is planning on making one to bolt on to the stock headers and exhaust section. That's the plan.
    Would you be able to ship overseas? I currently live in california

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