ACM exhaust mod question

KwlAznKid · 10-08-2016, 03:15 AM

I'm having a shop do the ACM mod and my shop is telling me in order to get a good weld in they need to open both sides of the muffler (as opposed to just one side as i'm seeing in most of the acm mod) does anyone if this is true? they are not charging me extra or anything to do the extra work so money isn't a motivating factor.

i just wonder if other shops were able to do a full weld securely without opening the other side or if there is supposed to be a small area not welded?

Rat3d ///M · 10-08-2016, 03:27 AM

Typically a small area is left unwelded. you can tell them just get as far around as they can if you don't want both sides opened.

KwlAznKid · 10-08-2016, 11:28 AM

Quote:

Originally Posted by Rat3d ///M

Typically a small area is left unwelded. you can tell them just get as far around as they can if you don't want both sides opened.

thanks for the respose, don't mind having both sides opened just wanted to make sure there was no reason for leaving a bit unwelded (for maybe sound or airflow reasons)

tenman · 10-08-2016, 10:56 PM

Quote:

Originally Posted by KwlAznKid

I'm having a shop do the ACM mod and my shop is telling me in order to get a good weld in they need to open both sides of the muffler (as opposed to just one side as i'm seeing in most of the acm mod) does anyone if this is true? they are not charging me extra or anything to do the extra work so money isn't a motivating factor.

i just wonder if other shops were able to do a full weld securely without opening the other side or if there is supposed to be a small area not welded?

My shop opened both sides. I think it's better to have the pipes fully welded.

KwlAznKid · 10-10-2016, 03:39 PM

Quote:

Originally Posted by tenman

My shop opened both sides. I think it's better to have the pipes fully welded.

thanks for the info! I got the shop to do both sides and am very happy with the results

10-08-2016, 03:15 AM	#1
KwlAznKid Brigadier General 354 Rep 3,036 Posts Drives: BMW/MERCEDES/PORSCHE Join Date: Jun 2005 Location: Los Angeles/Fremont USC/UCSD Alum iTrader: (6)	ACM exhaust mod question I'm having a shop do the ACM mod and my shop is telling me in order to get a good weld in they need to open both sides of the muffler (as opposed to just one side as i'm seeing in most of the acm mod) does anyone if this is true? they are not charging me extra or anything to do the extra work so money isn't a motivating factor. i just wonder if other shops were able to do a full weld securely without opening the other side or if there is supposed to be a small area not welded? __________________ BMW E93 M3 / Mercedes Benz W209 CLK500 BMW E64 650I(sold) / BMW E92 328I(sold) / BMW E46 M3(sold) / BMW E92 335I(sold) Porsche 996 911 C2(sold) / BMW E46 325CI(totaled)
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10-08-2016, 03:27 AM	#2
Rat3d ///M 997.1TT 1004 Rep 1,672 Posts Drives: 2007 Porsche 911 Turbo Join Date: Oct 2014 Location: Germany iTrader: (1)	Typically a small area is left unwelded. you can tell them just get as far around as they can if you don't want both sides opened.
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