SL55/63/65/R230 AMG: If you haven't got your resonators delete...
Newbie
Joined: May 2009
Posts: 11
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From: Toronto
2007 sl55 amg,2008 chev dually,yamaha r1,custom harley
My shop installed a few 45 degree elbows with the straight pipes .They followed the original contour of the stock exhaust and installed hangers where needed.Go to a hot rod car meet one night and ask who in the area does custom exhaust!Its so easy.
Member
Joined: Feb 2007
Posts: 160
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SL55
I'm going to have the resonators removed from my SL55 sometime in the next couple weeks...as soon as I can find a reputable muffler place in the area to do the job. My question is this: is there a difference between installing an X-pipe or a straight pipe? Also, will they have the proper materials on hand or do I need to order the correct pipe online ahead of time? Any info would be greatly appreciated. Thanks!!!
Newbie
Joined: May 2009
Posts: 11
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From: Toronto
2007 sl55 amg,2008 chev dually,yamaha r1,custom harley
X or H pipe
I had the muffler shop make it right there.It was an H pipe that they made.They drilled 2 holes on each straight pipe and welded a piece in between them(cross over closest to the front)Im not too sure if it makes positive gains but i installed it as many have mentioned .
MBWorld Fanatic!
Joined: May 2008
Posts: 1,615
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From: Maryland
SL55 AMG
On SL55 (unlike E55) the resonators cannot be X or H piped. The resonators (meaning the first pair of mufflers froward of the rear mufflers and aft of the secondary cats, not the actual primary or secondary cat pairs themselves) can only be removed and replaced with a straight section of pipe due to exhasut configuration under the sl55 car. The secondary cat can, however, be removed in place od a cross-over type sectioned replacement. Tuning may have to encorporate a way to remove any CEL associated with this modification.
Member
Joined: Feb 2007
Posts: 160
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SL55
Thanks for the responses, guys. I'm assuming any capable muffler shop should have a straight pipe on hand so it sounds like that shouldn't be too much trouble.
A couple of other quick questions to those who have done this to their SL55. Is there any drone in the cabin and if so, is it at high or low speeds(or both)? Also, I've read conflicting opinions that removing the resonators will result in a slight loss of low end torque. Is this true and if so, is it enough to even be noticeable? I can't imagine removing the resonators would have that much impact on torque, but I'd definitely like to hear opinions from those who have done it. Thanks again!!!
A couple of other quick questions to those who have done this to their SL55. Is there any drone in the cabin and if so, is it at high or low speeds(or both)? Also, I've read conflicting opinions that removing the resonators will result in a slight loss of low end torque. Is this true and if so, is it enough to even be noticeable? I can't imagine removing the resonators would have that much impact on torque, but I'd definitely like to hear opinions from those who have done it. Thanks again!!!
Super Member
Joined: Jun 2005
Posts: 771
Likes: 13
From: USA
E550
Thanks for the responses, guys. I'm assuming any capable muffler shop should have a straight pipe on hand so it sounds like that shouldn't be too much trouble.
A couple of other quick questions to those who have done this to their SL55. Is there any drone in the cabin and if so, is it at high or low speeds(or both)? Also, I've read conflicting opinions that removing the resonators will result in a slight loss of low end torque. Is this true and if so, is it enough to even be noticeable? I can't imagine removing the resonators would have that much impact on torque, but I'd definitely like to hear opinions from those who have done it. Thanks again!!!
A couple of other quick questions to those who have done this to their SL55. Is there any drone in the cabin and if so, is it at high or low speeds(or both)? Also, I've read conflicting opinions that removing the resonators will result in a slight loss of low end torque. Is this true and if so, is it enough to even be noticeable? I can't imagine removing the resonators would have that much impact on torque, but I'd definitely like to hear opinions from those who have done it. Thanks again!!!
I haven't deleted my resonator yet, but will be shortly, so I can't comment on the drone.
Anytime you open up the exhaust, you will lose back-pressure. This will normally result in a slight loss of low end torque, but should also give you a few extra HP high up in the RPM range. Honestly, you probably won't notice the lost torque or gained HP.
Member
Joined: Feb 2007
Posts: 160
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SL55
Have you experienced any drone or does it sound good in the cabin at both high and low speeds?
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Member
Joined: Feb 2007
Posts: 160
Likes: 0
SL55
Well, I finally got around to having the resonators removed from my SL55 today and all I can say is WOW! It sounds like an aftermarket exhaust was put on the car and the best thing about it is there's no drone in the cabin. As other have said, this is the way the car should have sounded stock....low and mean. I absolutely love it!!! 
Junior Member
Joined: Jul 2008
Posts: 63
Likes: 0
ML320,S320,SL55,190D
Well, I finally got around to having the resonators removed from my SL55 today and all I can say is WOW! It sounds like an aftermarket exhaust was put on the car and the best thing about it is there's no drone in the cabin. As other have said, this is the way the car should have sounded stock....low and mean. I absolutely love it!!!
How much of skill would it be someone whos never done such a job, maybe a few, and especially on no AMG?
Member
Joined: Feb 2007
Posts: 160
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SL55
As for the skill required to do this job, any capable muffler shop should be able to do it, but I had a trusted mechanic that works on all my cars do it for me. The total job took right around an hour and was probably the simplest task that could ever be done on an AMG.
Member
Joined: Jun 2007
Posts: 129
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From: Bethesda, MD
2003 E500 Sport, 1995 SL320
on some cars, freeing up the exhaust causes an increase in gas mileage (i know sounds crazy, right?). you'd think it's the opposite, since many aftermarket exhaust companies advertise increased HP and MPG with their exhaust systems.
anyways, a good way to test this would be for Brent72 to reset his MPG indicator, and report back after a few days/weeks/months/etc.
that'll give everyone a good before and after reading
anyways, a good way to test this would be for Brent72 to reset his MPG indicator, and report back after a few days/weeks/months/etc.
that'll give everyone a good before and after reading
Member
Joined: Feb 2007
Posts: 160
Likes: 0
SL55
I'm afraid I can't confirm any increase in MPG because I've had my foot in it a little too much listening to the deep, throaty sound of the exhaust.
When I start driving a little more civilized I'll reset the fuel indicator and see what kind of mileage I'm getting.
When I start driving a little more civilized I'll reset the fuel indicator and see what kind of mileage I'm getting.
MBWorld Fanatic!
Joined: Apr 2008
Posts: 2,838
Likes: 19
From: U.K.
SL 63 W/B AMG , S600,C220
Go do it now!
Just got mines done today and theres a noticable difference. I was considering buying a new exhaust, but after hearing this, I changed my mind.
Gives it a more deeper growl - about 30-40% louder. Makes me wonder why didn't it sound like that stock!
Heres a sample vid of it
http://www.youtube.com/watch?v=Hdhz8dM64yk
Just got mines done today and theres a noticable difference. I was considering buying a new exhaust, but after hearing this, I changed my mind.
Gives it a more deeper growl - about 30-40% louder. Makes me wonder why didn't it sound like that stock!
Heres a sample vid of it
http://www.youtube.com/watch?v=Hdhz8dM64yk
That's nearly as good as a SL63, not as tuneful though, still an improvement
I guess.
MBWorld Fanatic!
Joined: Feb 2009
Posts: 6,897
Likes: 85
From: Central WI (BFE)
SL55, ML500 & Acura TL
http://www.youtube.com/watch?v=Xi5oI-qNApM
http://www.youtube.com/user/lamb2u#p.../1/wd3Tfq2JlG0
Member
Joined: Aug 2009
Posts: 146
Likes: 1
From: Oakdale, CT
2003 SL55 AMG
Not that I promised anything, but here are a couple of links showing the result of exhaust mods on my 55.
http://www.youtube.com/watch?v=Xi5oI-qNApM
http://www.youtube.com/user/lamb2u#p.../1/wd3Tfq2JlG0
http://www.youtube.com/watch?v=Xi5oI-qNApM
http://www.youtube.com/user/lamb2u#p.../1/wd3Tfq2JlG0
MBWorld Fanatic!
Joined: Feb 2009
Posts: 6,897
Likes: 85
From: Central WI (BFE)
SL55, ML500 & Acura TL
I did once have a guy comment about the screaming SC. He was driving an earlier 2000 and something Corvette ZO6 and we had a little run at a light. I ate him up. He tried again while rolling at about 30 which I presumed was a sweet spot for him because he picked it. The results were the same. He then pulled up next to me and asked me if I had a blower.
Super Member
Joined: Nov 2001
Posts: 801
Likes: 2
From: South Florida
SL65
Any update on the drone? I know Charles re installed his resonators because of a popping noise at highway speeds coming from the exhaust.
Also, how can they weld the top of the slip on pipes if the exhaust is still installed on the car? There would be leaks....
Also, how can they weld the top of the slip on pipes if the exhaust is still installed on the car? There would be leaks....
Senior Member
Joined: Oct 2006
Posts: 375
Likes: 1
From: Lynnwood in summer, Fountain Hills during the rainy season in Wa.
2008 Maserati QP EGT, 2005 SL55AMG , 2002 CLK55AMG 2002 C230K Coupe
Here is just the resonator delete. No pop no drone;
http://www.youtube.com/watch?v=0v9BTV84q-I
With headers, no pop and no drone;
http://www.youtube.com/watch?v=C5tRD_3Rr9w
http://www.youtube.com/watch?v=0v9BTV84q-I
With headers, no pop and no drone;
http://www.youtube.com/watch?v=C5tRD_3Rr9w
Junior Member
Joined: Jul 2010
Posts: 36
Likes: 0
sl63 amg
i just got my resonators removed on the 63 today and my feelings are sort of mixed.. the burble from the exhaust is much louder even when idling. you can hear some of the burble when accelerating slowly. i dont exactly if i like that or not. but when you get on it, the car does sound a lot better. the noise is just right. not too loud and not too muffled. will drive for a little while to see if i want to do sth else or not.
Junior Member
Joined: Jan 2007
Posts: 19
Likes: 0
Resonator delete on 2004 SL55
The diagram shows
No 159 Center Mufflers
and
No 160 Rear Mufflers
Can someone who had the job done please comment on the following questions:
Are the rears considered resonators or also the center ones?
Which ones are removed when talking about "deleting resonators"?
Does the exhaust system have to be dropped to weld in the straight pipe or is there enough room on top to insure a perfectly closed weld all around?
Is there a preferred kind of pipe to be used for this job?
My car has a Stage 6 RennTeck package which includes the RennTech headers.
Thanks
