06-29-2012, 01:10 AM | #4 |
Colonel
214
Rep 2,938
Posts |
Finally!! Somone with balls attempted the m3post exhaust mod on their 1M
The guys on the m3 forum really like this mod. I wonder if it'll take off as a common mod for the 1M guys. I have a DIY coming for the 135i guys as soon as I bolt my exhaust back on and test it out. |
Appreciate
0
|
06-29-2012, 01:18 AM | #5 | |
Lieutenant
12
Rep 436
Posts |
Quote:
A DIY for open stock exhaust?
__________________
E30 x2 Sold
E39 x2 Sold E46 x3 Sold E82 x1 Sold E60 x1 Furniture... |
|
Appreciate
0
|
06-29-2012, 01:25 AM | #6 |
Colonel
376
Rep 2,388
Posts
Drives: M2 Competition
Join Date: May 2011
Location: East Bay, CA
|
This has to be a joke...
|
Appreciate
0
|
06-29-2012, 01:43 AM | #7 |
Colonel
214
Rep 2,938
Posts |
There are many variations to the M3 exhaust mod as it's been common knowledge since 2009:
http://www.m3post.com/forums/showthread.php?t=320052 http://www.m3post.com/forums/showthread.php?p=10784727 You can search "exhaust mod" on m3post for the other threads. I have a spare 135 exhaust so figured I might as well cut it open and see what's inside. I didn't have my camera with me when doing it (I know, ) but I plan to cut it back open soon enough to do replace the perforated pipes with straight pipes (ie: autocouture's version). I'll take proper photos then. What I currently have is just perforated pipes with heat wrap, similar to Prince_of_persia's exhaust: http://www.m3post.com/forums/showpos...3&postcount=25 Cliffs: 1M guys looking for a cheap exhaust mod can do something like this (2nd link): |
Appreciate
0
|
06-29-2012, 02:58 AM | #8 |
Lieutenant
12
Rep 436
Posts |
Thanks for the info, I do recall a video a while back but did not consider necessary since the axle-backs available on the market for 135i are decently priced. Still nice to see someone experimenting none the less. Lets hear a sound clip in comparison to your stock if you could make that happen!!
Keep up the good work man!
__________________
E30 x2 Sold
E39 x2 Sold E46 x3 Sold E82 x1 Sold E60 x1 Furniture... |
Appreciate
0
|
06-29-2012, 03:22 AM | #9 |
Lieutenant Colonel
142
Rep 1,700
Posts |
Is that not heavy baffling as I am sure there is some gas flow from all 4......but that orange/brown heat line around the box was sure an indication how obstructed it was in that area.
|
Appreciate
0
|
06-29-2012, 07:58 AM | #12 |
Driver
16
Rep 138
Posts |
I don't believe everyone is looking at this correctly - from what I see, exhaust gases flow equally to each pair of outlets. Notice that the influent exhaust pipe flows directly into the center section of the muffler. The gases then pass through the muffling mesh sandwiched between metal plates on each side, not just on that one side.
Certainly, as in the 135i, only one set of tips is necessary as the gases flow from only one source, but it is clear from this picture that all four tips are used.
__________________
-2003 BMW M5 (34k miles)
-2013 MINI Cooper S JCW GP (1k miles - SOLD) -2003 BMW 540i M-Tech (14k miles - SOLD) -2011 BMW 1-Series M Coupe (10k miles - SOLD) -2009 Volkswagen GTI (13k miles - SOLD) |
Appreciate
0
|
06-29-2012, 08:49 AM | #13 |
Mr. Brand Loyalist
43
Rep 418
Posts |
__________________
Current: 1M, M2cs
Retired: '08 135i,550GTxDrive, etc. |
Appreciate
0
|
06-29-2012, 09:12 AM | #16 |
Mr. Brand Loyalist
43
Rep 418
Posts |
I would guess not... if anything would be different based on emissions, it would be with the cats
__________________
Current: 1M, M2cs
Retired: '08 135i,550GTxDrive, etc. |
Appreciate
0
|
06-29-2012, 10:02 AM | #18 |
Major
169
Rep 1,478
Posts
Drives: 2017 F80 M3
Join Date: Dec 2010
Location: Houston, TX
|
__________________
_______________________
1991 E30 M3/Brilliantrot 2017 F80 M3/AW |
Appreciate
0
|
06-29-2012, 10:32 AM | #20 |
Captain
106
Rep 677
Posts |
+1
__________________
Follow my car/ life via Instagram @rdauito
2011 E82 1M #215 of 740 http://www.1addicts.com/forums/showthread.php?t=877009 |
Appreciate
0
|
06-29-2012, 03:09 PM | #22 |
First Lieutenant
36
Rep 391
Posts
Drives: INTERLAGOS ZCP
Join Date: Jun 2011
Location: Anywhere fast
iTrader: (0)
Garage List 1990 BMW L6 (retired) [0.00]
2010 BMW 135i M-Spo ... [0.00] 2011 BMW 1M (adopted) [0.00] 1990 MERCEDES 190E ... [0.00] 2012 BMW M3 [1.00] |
All 4 exhaust pipes emit gas. Your muffler might have a defective baffle, therefore explaining why exhaust only is evacuated from 2 of the 4 tips. Note, at cold startup, only 2 exhaust tips are opened intentionally to expedite engine warm up.
|
Appreciate
0
|
Bookmarks |
Thread Tools | Search this Thread |
|
|