3" exhaust
Thread Starter
MBWorld Fanatic!
Joined: Feb 2011
Posts: 2,841
Likes: 202
From: miami / delray beach
2014 E63s amg 4matic, 2009 C63, 2006 E55 AMG , 2001.5 AUDI S4 stg 3+ w/meth
3" exhaust
how many people are running 3" exhaust on their 55's ? I am looking to run 3" exhaust after my EC LTH's with no cats, no reinstators, just x pipe into EC wiseman mufflers.
asides from the loudness, did anyone notice any differnce like power pickup worth talking about?
asides from the loudness, did anyone notice any differnce like power pickup worth talking about?
MBWorld Fanatic!
Joined: Jul 2010
Posts: 4,921
Likes: 9
From: Streets of SoFlo
you to Hate
I would like to know this also.
MBWorld Fanatic!
Joined: Mar 2010
Posts: 1,909
Likes: 4
From: San Diego
F-250
Bassn07 has run 10.77 at 132 with a 2.5" exhaust
I assume he dynos in the 520-530 range on the DD
That said, I think, wide open runs like the mile (or real world madness) would benifit from getting the exhaust (and heat) the F out! I don't think you pick up a lot of power, or lose any, I just think the smaller exhaust may pose a bigger risk than a larger exhaust
In terms of sound: Ask chawkins!!
Mine is a little louder, when just driving around.. (WOT is another story)
Ill have some dyno numbers next week and we can look at this closer.
(I have this set up today)
I assume he dynos in the 520-530 range on the DD
That said, I think, wide open runs like the mile (or real world madness) would benifit from getting the exhaust (and heat) the F out! I don't think you pick up a lot of power, or lose any, I just think the smaller exhaust may pose a bigger risk than a larger exhaust
In terms of sound: Ask chawkins!!
Mine is a little louder, when just driving around.. (WOT is another story)
Ill have some dyno numbers next week and we can look at this closer.
(I have this set up today)
Thread Starter
MBWorld Fanatic!
Joined: Feb 2011
Posts: 2,841
Likes: 202
From: miami / delray beach
2014 E63s amg 4matic, 2009 C63, 2006 E55 AMG , 2001.5 AUDI S4 stg 3+ w/meth
i saw this EC CLS55 on youtube that sounded wicked with 3' full exhaust
http://www.youtube.com/watch?v=6k0Xd8m_5f0
i dont think i would pickup anything more than 5-10hp at most going from stock exhaust to 3" but that sound would be so worth
http://www.youtube.com/watch?v=6k0Xd8m_5f0
i dont think i would pickup anything more than 5-10hp at most going from stock exhaust to 3" but that sound would be so worth
MBWorld Fanatic!
Joined: Oct 2011
Posts: 1,060
Likes: 38
From: USA
'06 E55 AMG
i saw this EC CLS55 on youtube that sounded wicked with 3' full exhaust
http://www.youtube.com/watch?v=6k0Xd8m_5f0
i dont think i would pickup anything more than 5-10hp at most going from stock exhaust to 3" but that sound would be so worth
http://www.youtube.com/watch?v=6k0Xd8m_5f0
i dont think i would pickup anything more than 5-10hp at most going from stock exhaust to 3" but that sound would be so worth
Super Moderator
Joined: Jul 2003
Posts: 11,664
Likes: 3
From: SoCal
W221
I'm runnin a full 3 inch exhaust. I have lost a tad bit of torque down low due to hacking some hardware in the exhaust but it does feel as if I pull slightly harder up top compared to before. 
MBWorld Fanatic!
Joined: Jul 2010
Posts: 4,921
Likes: 9
From: Streets of SoFlo
you to Hate
Trending Topics
Thread Starter
MBWorld Fanatic!
Joined: Feb 2011
Posts: 2,841
Likes: 202
From: miami / delray beach
2014 E63s amg 4matic, 2009 C63, 2006 E55 AMG , 2001.5 AUDI S4 stg 3+ w/meth
i am ok loosing a little trq down low - it might actually help me not spin my tires from anything more than 1/4 throttle from a stop 
MB World Stories
The Best of Mercedes & AMG
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)
Verdad Gallardo
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
MBWorld Fanatic!
Joined: Dec 2008
Posts: 7,217
Likes: 6
3-five-five/ TUNDRA/ 07 997 cab
i saw this EC CLS55 on youtube that sounded wicked with 3' full exhaust
http://www.youtube.com/watch?v=6k0Xd8m_5f0
i dont think i would pickup anything more than 5-10hp at most going from stock exhaust to 3" but that sound would be so worth
http://www.youtube.com/watch?v=6k0Xd8m_5f0
i dont think i would pickup anything more than 5-10hp at most going from stock exhaust to 3" but that sound would be so worth
MBWorld Fanatic!
Joined: Jan 2009
Posts: 7,659
Likes: 67
From: Atlanta
2006 E55 AMG
The rule of thumb is that 2.5" exhaust will support up to 500HP until it becomes somewhat restrictive, and 3" exhaust will support up to 600HP before it becomes somewhat restrictive.
One of the best if not the best exhaust builder here in the south says that you should double the piping diameter, and that is right at the HP level it will start to be restrictive. Anything bigger is just overkill and you will start to loose TQ and HP.
One of the best if not the best exhaust builder here in the south says that you should double the piping diameter, and that is right at the HP level it will start to be restrictive. Anything bigger is just overkill and you will start to loose TQ and HP.
MBWorld Fanatic!
Joined: Mar 2010
Posts: 1,909
Likes: 4
From: San Diego
F-250
^… of course, but that’s because you know everything. Tell us some more about all your turbo cars, and the engineering fundamentals of exhaust flow and resonance. Be sure to outline pulse pattern vs. tube length, and if it’s not a problem, could you give us a brief description of scavenging?
If you get bored, I would love another narrative on Fuel Injector dynamics.. That was my FAVE
F^%ing Troll…..
If you get bored, I would love another narrative on Fuel Injector dynamics.. That was my FAVE
F^%ing Troll…..
Former Vendor of MBWorld
iTrader: (1)
Joined: May 2008
Posts: 12,139
Likes: 295
From: Houston
2003 W211 E55, 2003 W220 S600
3" all they way You EC LT collectors are 3" so why go down to 2.5. If you are spending the money get 3" so it will support your future mods when the 2.5 starts to become restrictive.
**** 2.xx piping
You EC LT collectors are 3" so why go down to 2.5. If you are spending the money get 3" so it will support your future mods when the 2.5 starts to become restrictive. **** 2.xx piping
Last edited by shardul; Oct 28, 2011 at 09:42 AM.
MBWorld Fanatic!
Joined: Dec 2006
Posts: 1,124
Likes: 32
From: Florida-Germany-New York
2004 E55,1969 300SEL6.3,2011 ML350 BlueTec Diesel,2005 ML400 CDI
The rule of thumb is that 2.5" exhaust will support up to 500HP until it becomes somewhat restrictive, and 3" exhaust will support up to 600HP before it becomes somewhat restrictive.
One of the best if not the best exhaust builder here in the south says that you should double the piping diameter, and that is right at the HP level it will start to be restrictive. Anything bigger is just overkill and you will start to loose TQ and HP.
One of the best if not the best exhaust builder here in the south says that you should double the piping diameter, and that is right at the HP level it will start to be restrictive. Anything bigger is just overkill and you will start to loose TQ and HP.
For example, in some cases I am aware of 3" X-pipes being installed onto the standard 2.75" pipes and resulting in a noticeable loss of power. Conversely, a 2.5" standard Magnaflow x-pipe machined to fit the standard 2.75" pipes and properly located can provide a small increase in power.
It's remarkable that MB would put such an terrible exhaust manifold on these cars and yet do the rest so well.
Last edited by AgSilver; Oct 28, 2011 at 11:17 AM.
Thread Starter
MBWorld Fanatic!
Joined: Feb 2011
Posts: 2,841
Likes: 202
From: miami / delray beach
2014 E63s amg 4matic, 2009 C63, 2006 E55 AMG , 2001.5 AUDI S4 stg 3+ w/meth
... I just wasnt sure if anyone had any " 3 inch exhaust sux on our cars" type of stories or definitive reasons not to do it
