BMW M3 Forum (E90 E92)

BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read


Go Back   M3Post - BMW M3 Forum > E90/E92 M3 Technical Topics > Cosmetic/Visual (Exterior + Interior) Modifications
 
Post Reply
 
Thread Tools Search this Thread
      03-24-2008, 09:24 PM   #1
Johndoe
Second Lieutenant
 
Drives: 09 M3 sedan
Join Date: Jan 2008
Location: Houston

Posts: 257
iTrader: (0)

best way to 'hide' muffler....

the muffler shows quite a bit - -looks pretty cheap in a high end car...would spray painting a higher gloss silver do the trick - currently you end up seeing dark yellow welding blotches and a very ugly/ visible muffler under the quad pipes ....!
Attached Images
 
Johndoe is offline  
0
Reply With Quote
      03-24-2008, 09:26 PM   #2
M3aHOLIC84
Private First Class
 
M3aHOLIC84's Avatar
 
Drives: 2002 Laguna Seca Blue M3
Join Date: Mar 2008
Location: SoCal

Posts: 170
iTrader: (0)

if it was a dark car liek black or jerez you could paint it the color of the car or simply black and get it done...but first of all sedan owners have to figure out how to hide those ugly rear lights of theirs...ugliest lights ever
__________________
2002 Laguna Seca Blue M3
M3aHOLIC84 is offline  
0
Reply With Quote
      03-24-2008, 09:29 PM   #3
jtown
Lieutenant
 
jtown's Avatar
 
Drives: TBD
Join Date: Sep 2006
Location: Norcal

Posts: 596
iTrader: (0)

Do NOT paint it the color of the car. Ever see those $5 mako paint jobs where they forget to cover up the exhaust when they spray the car? Good lord ... please do not bastardize the M that way.

Best way to hide it is to go aftermarket. Maybe a stock sounding and looking exhaust will come out
jtown is offline  
0
Reply With Quote
      03-24-2008, 09:32 PM   #4
M3Kevin
Private First Class
 
M3Kevin's Avatar
 
Drives: Alpine White 2008 M3
Join Date: Mar 2008
Location: Phoenix AZ

Posts: 128
iTrader: (0)

Garage List
2004 Corvette Z06  [0.00]
2004 GT3  [0.00]
2008 M3  [0.00]
1) Do not paint it. Fire hazard.
2) Do not paint it. It will discolor.
3) Do not paint it. It will shorten the life of the muffler due to increased heat.
4) Do not cover it - heat needs to be dissapated. Covers will prevent that and heat up other areas not shielded for the new heat load.
M3Kevin is offline   United_States
0
Reply With Quote
      03-24-2008, 09:33 PM   #5
WCH
Major
 
WCH's Avatar
 
Drives: '14 F10 M5 SG
Join Date: Nov 2006
Location: Boston

Posts: 1,175
iTrader: (5)

Garage List
2014 F10 M5  [0.00]
2014 Cayenne GTS  [0.00]
2011 E92 M3  [0.00]
Wouldn't painting it black make it less visible? One would need to use a heat resistant paint...
__________________
WCH is offline   United_States
0
Reply With Quote
      03-24-2008, 09:52 PM   #6
Revin9k
Private
 
Drives: Honda s2000
Join Date: Jan 2008
Location: Cali

Posts: 63
iTrader: (0)

powdercoat the mufflers black. or you can invest in a remus exhaust which has black mufflers.
Revin9k is offline  
0
Reply With Quote
      03-24-2008, 10:05 PM   #7
CampioniShop
 
CampioniShop's Avatar
 
Drives: na
Join Date: Aug 2007
Location: NY

Posts: 791
iTrader: (0)

Our exhaust is blacked out from the rear, you can't see it:
CampioniShop is offline  
0
Reply With Quote
      03-24-2008, 10:13 PM   #8
swamp2
Lieutenant General
 
swamp2's Avatar
 
Drives: E92 M3
Join Date: Sep 2006
Location: San Diego, CA USA

Posts: 10,201
iTrader: (1)

Quote:
Originally Posted by Remus View Post
Our exhaust is blacked out from the rear, you can't see it:
Looks good. I especially like the flat black solution to further hide and address certain visibility concerns. I am noticing that most aftermarket solutions for the E9X M3 are dual canisters, whereas stock is a single canister. My concerns about all of these dual canister configuraitons is the drastic change in the shape of things right in and around the rear diffuser and differentialm area. The design of the cars underbody, area around the differential and diffuser all seem to be key ingredients in providing proper cooling air for the differential. So here is the key question. Has Remus done any analysis or testing on the air flow or cooling to insure this large design change does not affect either differential cooling or other aerodynamic issues?
swamp2 is offline   United_States
0
Reply With Quote
      03-24-2008, 10:24 PM   #9
FifthStreetz
O! So Sour!!
 
FifthStreetz's Avatar
 
Drives: Fast e30 / Slow M3
Join Date: Apr 2007
Location: Fort Lee, NJ

Posts: 15,539
iTrader: (24)

Garage List
2008 M3  [4.75]
Either get new mufflers or a rear diffuser.
__________________
FifthStreetz is offline   United_States
0
Reply With Quote
      03-24-2008, 10:36 PM   #10
m3forever
Private
 
m3forever's Avatar
 
Drives: 2010 335D
Join Date: Oct 2007
Location: Socal

Posts: 62
iTrader: (0)

Quote:
Originally Posted by FifthStreetz View Post
Either get new mufflers or a rear diffuser.

+1
__________________
2010 BMW 335D
2006 YAMAHA R6
2004 Acura TL Aspec (Sold)
2003 BMW E46M3 (Sold)
m3forever is offline   American Samoa
0
Reply With Quote
      03-25-2008, 06:13 AM   #11
MrHarris
yodog
 
MrHarris's Avatar
 
Drives: '86 Corolla
Join Date: Jun 2007
Location: Diamond Bar, Ca

Posts: 5,037
iTrader: (5)

Garage List
2009 BMW  [5.00]
Send a message via AIM to MrHarris
That Remus looks nice, any sound clips?
MrHarris is offline   United_States
0
Reply With Quote
      03-25-2008, 07:04 AM   #12
gorun
Lieutenant
 
gorun's Avatar
 
Drives: W166 ML63 PP
Join Date: Mar 2007
Location: Where the roads are crap...

Posts: 514
iTrader: (0)

Remus does not center very well in this pic. Can this be adjusted?
Attached Images
 
gorun is offline  
0
Reply With Quote
      03-25-2008, 07:04 AM   #13
gorun
Lieutenant
 
gorun's Avatar
 
Drives: W166 ML63 PP
Join Date: Mar 2007
Location: Where the roads are crap...

Posts: 514
iTrader: (0)

Quote:
Originally Posted by M3aHOLIC84 View Post
if it was a dark car liek black or jerez you could paint it the color of the car or simply black and get it done...but first of all sedan owners have to figure out how to hide those ugly rear lights of theirs...ugliest lights ever
that is so true. hihi true jap style rear light cluster
gorun is offline  
0
Reply With Quote
      03-25-2008, 11:22 AM   #14
BCMPOWER
Captain
 
BCMPOWER's Avatar
 
Drives: 08 Silverstone II M3
Join Date: Dec 2007
Location: Silver Spring MD

Posts: 626
iTrader: (0)

^ I think that was a bad install, a company like remus is going to make sure its products fit correctly. They are manufacturers for some of the top tuners they have to get it right.
__________________
BCMPOWER is offline   United_States
0
Reply With Quote
      03-25-2008, 11:25 AM   #15
BCMPOWER
Captain
 
BCMPOWER's Avatar
 
Drives: 08 Silverstone II M3
Join Date: Dec 2007
Location: Silver Spring MD

Posts: 626
iTrader: (0)

Quote:
Originally Posted by MrHarris View Post
That Remus looks nice, any sound clips?
check out this thread http://www.m3post.com/forums/showthread.php?t=122438
__________________
BCMPOWER is offline   United_States
0
Reply With Quote
      03-25-2008, 11:28 AM   #16
CampioniShop
 
CampioniShop's Avatar
 
Drives: na
Join Date: Aug 2007
Location: NY

Posts: 791
iTrader: (0)

Wow, I had never seen that install picture before, looks awful!
Our exhaust comes with adjustable hangers, that installation shop must have done something wrong.

Swamp2 :
I will contact REMUS Austria about this as it is a very technical question.
CampioniShop is offline  
0
Reply With Quote
      03-25-2008, 07:31 PM   #17
jtown
Lieutenant
 
jtown's Avatar
 
Drives: TBD
Join Date: Sep 2006
Location: Norcal

Posts: 596
iTrader: (0)

Quote:
Originally Posted by Remus View Post
Wow, I had never seen that install picture before, looks awful!
Our exhaust comes with adjustable hangers, that installation shop must have done something wrong.

Swamp2 :
I will contact REMUS Austria about this as it is a very technical question.
Maybe they're on backwards. Haha. Hopefully the bumper isn't melted on that one.
jtown is offline  
0
Reply With Quote
      03-25-2008, 07:51 PM   #18
swamp2
Lieutenant General
 
swamp2's Avatar
 
Drives: E92 M3
Join Date: Sep 2006
Location: San Diego, CA USA

Posts: 10,201
iTrader: (1)

Quote:
Originally Posted by jtown View Post
Maybe they're on backwards. Haha. Hopefully the bumper isn't melted on that one.
That will melt the diffuser FOR SURE. Tips get HOT especially when you are pushing it a bit. Terrible...
swamp2 is offline   United_States
0
Reply With Quote
      03-25-2008, 08:59 PM   #19
lucid
Major General
 
lucid's Avatar
 
Drives: E30 M3; Expedition
Join Date: Apr 2007
Location: USA

Posts: 8,034
iTrader: (0)

Quote:
Originally Posted by swamp2 View Post
Has Remus done any analysis or testing on the air flow or cooling to insure this large design change does not affect either differential cooling or other aerodynamic issues?
I seriously doubt any of the aftermarket exhaust manufacturers are testing this thoroughly. They would have to instrument the car with flow and temp sensors and drive it at varying conditions for extended periods of time to collect data. Even if they were to do that, I doubt that they would know how to interpret the data. Say, they noticed a temp increase in the differential cooling fins. How would they go about interpreting if that is significant or not, and if it might result in some kind of damage to the differential in the long run (unless the delta is so high that the issue is blatantly obvious, which is unlikely just for an exhaust mod)? BMW engineers might be able to interpret the data for them, but why would they get involved? I think this is all trial and error engineering (well tinkering really), and that's the risk one takes when installing an aftermarket exhaust system.

On a similar note, I have much more of a concern about lowering the car. I wish BMW would somehow release info on what the flow and cooling implications of that might be. They have obviously studied that carefully before deciding on a ride height. The thing rides higher than a 335 coupe, so clearance and everyday drivability are not the reasons behind that decision.
__________________
lucid is offline   United_States
0
Reply With Quote
      03-25-2008, 09:02 PM   #20
Johndoe
Second Lieutenant
 
Drives: 09 M3 sedan
Join Date: Jan 2008
Location: Houston

Posts: 257
iTrader: (0)

painting the front end of muffler black...

...ie. only spray paint heat-resistant black paint behind the exhaust where muffle is currently visible......that should not lead to overheating ...or is it major NO NO.....
Johndoe is offline  
0
Reply With Quote
      03-26-2008, 10:36 AM   #21
CampioniShop
 
CampioniShop's Avatar
 
Drives: na
Join Date: Aug 2007
Location: NY

Posts: 791
iTrader: (0)

Swamp2:
According to REMUS Austria, the exhaust design allows for more cooling of the differential as tested in their R&D department. The tests results cannot be shown to the public. Furthermore, the canisters are packed with heat resistant insulation wool to prevent overheating the differential.

They did not test aerodynamics because REMUS does not have a wind tunnel.
CampioniShop is offline  
0
Reply With Quote
      03-28-2008, 12:26 AM   #22
chasem3
Second Lieutenant
 
chasem3's Avatar
 
Drives: E92 M3
Join Date: Feb 2008
Location: USA

Posts: 259
iTrader: (0)

get a diffuser
chasem3 is offline  
0
Reply With Quote
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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
Forum Jump


All times are GMT -5. The time now is 12:53 AM.




m3post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST