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Thread: Exhaust Systems

  1. #26
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    Quote Originally Posted by rodneyngo View Post
    Would you be able to ship overseas? I currently live in california
    That's the plan he is authorised distributor of some exhaust brands for exotic vehicles and ships internationally.

  2. #27
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    1991 BMW 850i
    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.
    How is the x-pipe coming along and are there any news about it?

  3. #28
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    Quote Originally Posted by rodneyngo View Post
    How is the x-pipe coming along and are there any news about it?
    Nothing much - my mechanic has his hands full and I've been enjoying driving the car will probably pick this up again early 2019.

  4. #29
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    1972 3.0 CSi-1988 M6
    In reply to “Rodneyngo”.

    SuperSprint stainless steel 850i X-pipe. Not cheap ($670), but it’s a direct bolt on.
    Attached Images Attached Images
    Last edited by M6csi; 12-03-2018 at 04:09 PM.
    Bert
    91 850i-A
    72 3.5 CSi (L-jet, Getrag 265 5 speed)
    88 ///M6

    The back to back to back "BIG COUPE" trio

  5. #30
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    Quote Originally Posted by M6csi View Post
    In reply to “Rodneyngo”.

    SuperSprint stainless steel 850i X-pipe. Not cheap ($670), but it’s a direct bolt on.
    How do you like the sound?
    1993 850Ci.....161,000 miles and counting!

  6. #31
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    Quote Originally Posted by TedBobo View Post
    How do you like the sound?
    The Eisenmann race exhaust fitted with the factory resonator sounded better than the replaced Remus exhausts. Little bit more rumble at idle than it really comes alive at the higher rpms (3k+). Still it was more tamed than I would’ve liked, hence, the fitment of the SuperSprint X-pipe. Now with the SuperSprint pipes, the deeper rumble and burble (not obnoxiously so) at idle is very satisfying sounding. At mid to wide opened throttle, the dual exhausts emit a high pitch wail that just screams and it’s just music to the ears. There is a slight drone at and only at about 1k rpm, which I’ve learned to live with, otherwise, there is no drone at highway speed. Very satisfied with the Eisenmann and SuperSprint combo.
    Last edited by M6csi; 12-04-2018 at 04:46 AM.
    Bert
    91 850i-A
    72 3.5 CSi (L-jet, Getrag 265 5 speed)
    88 ///M6

    The back to back to back "BIG COUPE" trio

  7. #32
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    Oct 2010
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    Florgia
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    1998 BMW 740i
    I have to agree with M6csi! I just completed the install over the weekend. Supersprint X pipe to Eisenmann. Very satisfied with the higher pitch at wot!!!!

  8. #33
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    Thanks gents.
    1993 850Ci.....161,000 miles and counting!

  9. #34
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    1991 BMW 850i
    Quote Originally Posted by rotomoto712 View Post
    I have to agree with M6csi! I just completed the install over the weekend. Supersprint X pipe to Eisenmann. Very satisfied with the higher pitch at wot!!!!
    Does anyone have a video of this setup?

  10. #35
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    Canada
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    1991 850i J-Spec
    Quote Originally Posted by rodneyngo View Post
    Does anyone have a video of this setup?
    Also interested in hearing what this sounds like. I'm considering going with the Eisenmann Race Exhaust but am quite worried about it being too loud or obnoxious for driving around in traffic. It is livable, especially with an x-pipe in place of the resonator?

  11. #36
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    San Antonio
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    850i, '76 2002, '76 530
    There are several youtube videos of 850i's with different exhaust systems. I have 2.5" exhaust system with custom-made x-pipe, 18" resonators, and magnaflow mufflers but it definitely drones at low speed and low rpm up to 2000 rpm. Once I am up to 30+mph it becomes quiet even at highway speeds, but when you drop it into 'S' mode and get the rpms up to 4000+ it really sounds good with a strong howl but its not disturbing at all.

  12. #37
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    ireland
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    1993 e32
    I've being trying to get a decent sound from my 840ci, so far without much luck.
    I started with completely stock exhaust system which is a waste of a nice V8 when it's so quiet. First fitted a pair of magnaflow rear mufflers as they are cheap. It gave the car an exhaust sound, but It was just sound, no v8 and introduced the annoying cabin drone from 1000 to 2000 rpm.

    Later when i could afford it, i swapped the magnaflows for an eisenmann sports exhaust. Sounds nicer, but still no trace of a V8 in there and the cabin drone was still there.
    Next I fitted a custom X-pipe which really made a difference, nice throaty V8 with decent sound at higher rpm's as well, It's fairly loud, but the cabin drone is unbearable.
    My next plan is to fit a set of eisenmann silencer inserts to see if it will bring the volume down to a more usable level. (If I can find somewhere that can fit them)

    Has anyone actually tried fitting the inserts and do they make much difference? And failing that, has anyone tried stock mufflers with an X-pipe fitted on an 840ci?
    Most of the info here is really based on the V12 and unfortunately I live in Ireland, so no where to drop the car in for proper custom exhaust work.
    Any other suggestions would be welcome before I give up and revert it all back to stock.
    Last edited by tepescovir; 12-21-2018 at 10:59 AM.

  13. #38
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    I've had a few versions of exhaust fitted on my two 840ci's - and the key is decent back boxes - the sound is all about those boxes, and performance comes from cats and an X crossover. The problem is you have already removed the resonator (which also serves as a cross-over between banks) - and that reduces resonance significantly, and reduces the amount of sound produced.

    As you have got to this point I think I would have a go at re-fitting the back boxes and seeing how it sounds - as any 'performance' rear boxes are not going to reduce the sound levels that much. Hopefully they will also remove that resonance to a much lower RPM.

    The best pure sound I achieved with no resonance at all was with a completely stock system apart from Longlife rear boxes:



    When I got my second 840ci I went back to Longlife and had the same rear boxes fitted - and the resonator removed plus an X pipe fabricated - and it was lovely at tick-over but quite loud when giving it some welly - but quite acceptable apart from at full throttle. Later I had the cats replaced with 200-cell versions and it got a lot louder! A bit like a nail-gun, you can hear every cylinder firing when you put your foot down. Still, it sounds perfect with all the windows up!

    Timm..2007 E64 650i Individual Sport..1999 E31 840ci Individual Sport..ex owner of 2000 E38 740..1999 E38 740i V8 M62..1998 E38 735i V8..1993 E32 730i V8..1988 E28 518i


    My Current 840ci Sport Individual
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    My E31 Repair and Information Website
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  14. #39
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    "The best pure sound I achieved with no resonance at all was with a completely stock system apart from Longlife rear boxes:"

    cheers for the reply, Up till last week the exhaust was completely stock except for the rear boxes which are eisenmann's sports . But still had bad cabin drone with the stock cats and resonator and i've being trying to get rid of the drone ever since. In theory, it should sound it's best with all stock and just the eisenmann rear boxes which most would consider among the best? But didn't on my 840? I had the exhaust checked a number of times by different companies and they all found no issues. Even the resonator looked good internally when it was removed last week.

    At this point, I think I'll have to revert it back to stock, starting with the rear boxes, and then a new resonator if there is still a drone.

    Mine actually sounds very like your second video when it's pushed, but the low end drone between 1000 to 2000rpms which is motorway and main road cruising is driving me nuts on my daily commute.
    Last edited by tepescovir; 12-21-2018 at 04:32 PM.

  15. #40
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    Timm , does it always rain/snow in the UK ?

  16. #41
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    Timm, What longlife boxes did you fit? there is an exhaust specialist near me thats the irish dealer for longlife exhausts?

  17. #42
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    @tepescovir see my posts above.y mechanic does a lot of R&D work on exotics and in particular exhaust systems. We're in the process of developing a system for the 840Ci to achieve that high frequency sound.

  18. #43
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    Quote Originally Posted by tangcla View Post
    @tepescovir see my posts above.y mechanic does a lot of R&D work on exotics and in particular exhaust systems. We're in the process of developing a system for the 840Ci to achieve that high frequency sound.
    I've been following the thread, as well as others. I care more about the low end sound and getting rid of the cabin drone, but I'm still interested and hope it will work as a solution for me when it becomes available for sale. But for the moment, i'll have to back to stock so the car is driveable as it's my daily and only car.

  19. #44
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    Quote Originally Posted by tepescovir View Post
    I've been following the thread, as well as others. I care more about the low end sound and getting rid of the cabin drone, but I'm still interested and hope it will work as a solution for me when it becomes available for sale. But for the moment, i'll have to back to stock so the car is driveable as it's my daily and only car.
    Lack of cabin drone is also one of the prerequisites. But if you want the deep rumble, then yes, back boxes will be the main solution.
    I want to achieve a different pitch.

  20. #45
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    Quote Originally Posted by Belgiumbarry View Post
    Timm , does it always rain/snow in the UK ?
    No, it's been a lovely day today!

    As the drone started when you fitted the rear boxes then that is the cause of it - and I'm not sure changing the rest of the exhaust will make a blind bit of difference. Unfortunately there is no visible part number on the Longlife back boxes, but have a word with them and explain your problem and I'm sure they will sort you out - but with the loss of the resonator it is always going to be quite loud....
    Timm..2007 E64 650i Individual Sport..1999 E31 840ci Individual Sport..ex owner of 2000 E38 740..1999 E38 740i V8 M62..1998 E38 735i V8..1993 E32 730i V8..1988 E28 518i


    My Current 840ci Sport Individual
    My Current 650ci Sport Individual
    My E31 Repair and Information Website
    My E38 Repair and Information Website
    My E63/E64 Repair and Information Website

    Chase - Heroes to a generation

  21. #46
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    I have a custom-built 2.5" stainless exhaust on my 850 but it does have the low rpm drone. Custom-made X-pipe, 18" resonators, and Magnaflow cans. Car is actually pretty quiet at speed until you drop it into 'S' mode and run the rpms up to 4K+ then it starts to growl and sounds damn good.

    part0_5.jpg

  22. #47
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    Quote Originally Posted by Timm View Post
    No, it's been a lovely day today!

    As the drone started when you fitted the rear boxes then that is the cause of it - and I'm not sure changing the rest of the exhaust will make a blind bit of difference. Unfortunately there is no visible part number on the Longlife back boxes, but have a word with them and explain your problem and I'm sure they will sort you out - but with the loss of the resonator it is always going to be quite loud....
    Timm, i had no complains about drone.... you mixed posts i suppose… ?

  23. #48
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    Quote Originally Posted by Belgiumbarry View Post
    Timm, i had no complains about drone.... you mixed posts i suppose… ?
    The post was directed to me i believe.

  24. #49
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    It was!
    Timm..2007 E64 650i Individual Sport..1999 E31 840ci Individual Sport..ex owner of 2000 E38 740..1999 E38 740i V8 M62..1998 E38 735i V8..1993 E32 730i V8..1988 E28 518i


    My Current 840ci Sport Individual
    My Current 650ci Sport Individual
    My E31 Repair and Information Website
    My E38 Repair and Information Website
    My E63/E64 Repair and Information Website

    Chase - Heroes to a generation

  25. #50
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    Does anyone know where I can buy stock rear boxes for my 840ci? they are now out of production when I tried my bmw dealership

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