2 questions for OEM exhaust mod

flynscot · 10-16-2015, 07:02 AM

2 quick questions as I am performing the OEM mod by removing the perforated pipe (2 pipe method). 1- Do you try to weld both pieces of the double wall plate that was removed for access back into position or just one to cover the hole? 2- Do you put the stuffing back in; why, why not?
Thanks

Helmsman · 10-16-2015, 09:05 AM

Quote:

Originally Posted by flynscot

2 quick questions as I am performing the OEM mod by removing the perforated pipe (2 pipe method). 1- Do you try to weld both pieces of the double wall plate that was removed for access back into position or just one to cover the hole? 2- Do you put the stuffing back in; why, why not?
Thanks

Hey Flyn, my guy welded back both of the (double) walls. Yes I the wool put back as I believe most guys do. Think I read about some who didn't and the sound turned more metalic/tinkering if that makes sense.

Cheers

Ps. One thing worth doing is to drill a few wholes throught the double walls and weld. Just had mine back to the shop ss it started to develop an annoying rasp when it was cold. Turned out it was the inner shield coming lose and rattling. This was on the sides i.e. not were it was opened in the first place. I hope its ruggened now...Another obvious one is the better you tighten up the pipe welding the more of the sound gets out there rather than stays with the wool...

M3 Number 86 · 10-16-2015, 02:08 PM

i just cut, wrapped with titanium heat shield and safety wires, took out all the hair, rewelded.

Stronie · 10-16-2015, 02:13 PM

Good to know, mine is sitting in my garage waiting to get cut up.

///M Power-Belgium · 10-16-2015, 02:32 PM

To avoid any misunderstandings ...

The one and only "RIGHT" way for our Oem. exhaust mod . ( 2 big perforated pipe replacement)
The DIY video...

sylonien · 10-16-2015, 07:57 PM

I went bit further 4 pipe replaced (not wrapped) and xpipe delete

ResoKP · 10-19-2015, 10:03 AM

Straight through method is also a good option: http://www.m3post.com/forums/showthread.php?t=646891

This is what I got done.

Iyzmi · 10-20-2015, 02:23 PM

Quote:

Originally Posted by ResoKP

Straight through method is also a good option: http://www.m3post.com/forums/showthread.php?t=646891

This is what I got done.

This is the correct way to do the OEM exhaust mod.

10-16-2015, 07:02 AM	#1
flynscot Private First Class 102 Rep 103 Posts Drives: E46/E90/F80 (sold) F82 now Join Date: Nov 2009 Location: Maryland iTrader: (0)	2 questions for OEM exhaust mod 2 quick questions as I am performing the OEM mod by removing the perforated pipe (2 pipe method). 1- Do you try to weld both pieces of the double wall plate that was removed for access back into position or just one to cover the hole? 2- Do you put the stuffing back in; why, why not? Thanks
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10-16-2015, 02:08 PM	#3
M3 Number 86 Major General 3221 Rep 6,218 Posts Drives: black m3 Join Date: Mar 2015 Location: pasadena iTrader: (1)	i just cut, wrapped with titanium heat shield and safety wires, took out all the hair, rewelded.
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10-16-2015, 02:13 PM	#4
Stronie Major 314 Rep 1,453 Posts Drives: 2017 F80M3 Comp. 6MT Join Date: May 2006 Location: Instagram: @Atlantis_S55 iTrader: (0)	Good to know, mine is sitting in my garage waiting to get cut up.
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10-16-2015, 02:32 PM	#5
///M Power-Belgium General 63578 Rep 24,716 Posts Drives: ///M3-E92-DCT Silverstone II Join Date: Jul 2012 Location: Belgium iTrader: (0)	To avoid any misunderstandings ... The one and only "RIGHT" way for our Oem. exhaust mod . ( 2 big perforated pipe replacement) The DIY video... __________________ "MAX VERSTAPPEN" IS THE 2021+2022+2023 F1 WORLD CHAMPION - #UnLeashTheLion BPM DEV-Tune & DCT Software-Tune & Servotronic & coding ///Alpine HID Angeleyes ///Oem.exhaust mod.
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10-16-2015, 07:57 PM	#6
sylonien Major 114 Rep 1,326 Posts Drives: M3 Join Date: Apr 2012 Location: UK iTrader: (0)	I went bit further 4 pipe replaced (not wrapped) and xpipe delete __________________ Please consider checking out my YouTube Channel for car and tech videos.
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10-19-2015, 10:03 AM	#7
ResoKP Private 29 Rep 72 Posts Drives: E93 M3 Join Date: Aug 2015 Location: Toronto, ON iTrader: (0)	Straight through method is also a good option: http://www.m3post.com/forums/showthread.php?t=646891 This is what I got done.
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