Home Forums Articles How To's FAQ Register
Go Back   Xoutpost.com > BMW SAV Forums > X ///M Forum
Arnott
User Name
Password
Member List Premier Membership Search Today's Posts Mark Forums Read

Xoutpost server transfer and maintenance is occurring....
Xoutpost is currently undergoing a planned server migration.... stay tuned for new developments.... sincerely, the management


Reply
 
LinkBack Thread Tools Display Modes
  #11  
Old 05-13-2010, 08:14 AM
Weasel's Avatar
Almost never on here anymore :(
 
Join Date: Jul 2008
Location: New Orleans, La
Posts: 6,892
Weasel will become famous soon enough
The reason it has the sound that it does is due to the firing order, turbos, their positioning (in the engine valley) and the way the exhaust headers are made. The headers have the cylinders that are 180 out in firing order are paired up to the turbo to get the smoothest and fastest spooling of the turbos.

But to illustrate the affect of the firing order I can use Chevy as an example... The 4.3l V6 is basically the 350ci V8 missing 2 cylinders, with the firing order at 1, 6, 5, 4, 3, 2. It can sound just like a V8 at idle with exhaust work done. While the 3.1l/3.3l/3.6l etc. that they use in cars have a sequential firing (1,2,3,4,5,6) order which gives them a very different exhaust tone with no depth, that smooth sound with no rumble.

To get a bit deeper rumble in the X5M you could simply ad an x-pipe or crossover pipe somewhere in the system switching to larger diameter pipe after it.... but I wouldn't want a larger pipe before or after the turbo system that would affect spool time.
__________________
"When you do things right, people won't be sure you've done anything at all" (Bender, futurama)

You make something idiotproof, they'll make a better idiot


You think professional is expensive, just wait until you pay for amateur.

Never let your sense of morals prevent you from doing what is right.

Examine what is said, not who speaks.

X5 pics

RIP 4.6is.....

2003 4.6is
Reply With Quote

Sponsored Links

  #12  
Old 05-13-2010, 10:23 AM
Member
 
Join Date: Feb 2010
Location: New York City
Posts: 99
MFL101 is on a distinguished road
Would like to see a video of the Eisenmann Sport, Eisenmann Race and Super Sprint....those seem to be the three available now.
Reply With Quote
  #13  
Old 05-14-2010, 05:04 AM
The Big Easy's Avatar
Member
 
Join Date: Mar 2005
Location: X5 World
Posts: 928
The Big Easy is on a distinguished road
Trips - come on do I need to start or in order to get a proper update here?!

Cheers,
__________________
997 | 958
Reply With Quote
  #14  
Old 05-16-2010, 01:48 PM
LeMansX5's Avatar
Admin
 
Join Date: Mar 2005
Location: X5world
Posts: 20,257
LeMansX5 has a spectacular aura aboutLeMansX5 has a spectacular aura aboutLeMansX5 has a spectacular aura about
IND pics by Nate





Eisenmann installed



Reply With Quote
  #15  
Old 05-17-2010, 03:44 AM
Member
 
Join Date: Apr 2010
Location: new york
Posts: 22
x6m_monster is on a distinguished road
It really look nice ...

I would like to hear your feedback about the feeling of the car response and the difference of engine behavior after pressing the M button , coz i changed mine to hamann and the feeling of the car is different.

::You can see that there is no golf tee blockage on the 2nd exhaust .. same with hamann ::
Reply With Quote
  #16  
Old 05-18-2010, 10:32 AM
Member
 
Join Date: Oct 2007
Location: Belfast
Posts: 559
jimsaq is on a distinguished road
very nice
Reply With Quote
  #17  
Old 05-20-2010, 08:56 AM
Member
 
Join Date: Jan 2010
Location: Moscow
Posts: 71
Iluxa is on a distinguished road
Eisenmann defo looks good and sounds imho better than Supersprint/Hamann.
we need to see what a full turboback exhaust upgrade will do,
any plans from Eisenmann on full exhaust system?

Last edited by Iluxa; 05-22-2010 at 05:06 AM.
Reply With Quote
  #18  
Old 05-25-2010, 03:42 PM
Trips's Avatar
Member
 
Join Date: Aug 2008
Location: Crown Point, IN
Posts: 79
Trips is on a distinguished road
Here's a link to the professional video:

Eisenmann X5M/X6M Race performance video! - XBimmers.com | BMW X6 Forum X5 Forum

_Tom

__________________
10 x5m carbon black/black
10 r8 v10 ibis white/black

Last edited by LeMansX5; 06-02-2010 at 09:43 PM. Reason: Fixed YouTube codes
Reply With Quote
  #19  
Old 06-02-2010, 03:45 PM
Member
 
Join Date: Dec 2009
Location: Milwaukee
Posts: 460
998M is on a distinguished road
Ilia sent this to me the other day.



I am headed down to IND on Monday to have the truck lowered. No exhaust yet.

marc

Last edited by LeMansX5; 06-02-2010 at 09:42 PM. Reason: Fixed YouTube codes
Reply With Quote
  #20  
Old 06-02-2010, 09:44 PM
LeMansX5's Avatar
Admin
 
Join Date: Mar 2005
Location: X5world
Posts: 20,257
LeMansX5 has a spectacular aura aboutLeMansX5 has a spectacular aura aboutLeMansX5 has a spectacular aura about
Quote:
Originally Posted by 998M View Post
Ilia sent this to me the other day.



I am headed down to IND on Monday to have the truck lowered. No exhaust yet.

marc
Not bad, considering you can't go that fast on that road they are taping video. let me know when you get the exhaust.
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On





All times are GMT -4. The time now is 08:10 PM.
vBulletin, Copyright 2019, Jelsoft Enterprises Ltd. SEO by vBSEO 3.6.0
2017 Xoutpost.com. All rights reserved. Xoutpost.com is a private enthusiast site not associated with BMW AG.
The BMW name, marks, M stripe logo, and Roundel logo as well as X3, X5 and X6 designations used in the pages of this Web Site are the property of BMW AG.
This web site is not sponsored or affiliated in any way with BMW AG or any of its subsidiaries.