SL55 AMG, SL63 AMG, SL65 AMG (R230) 2002 - 2011 (2003 US for SL55 and 2004 for the SL65)

SL55/63/65/R230 AMG: More questions about Muffler Delete

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Old 11-14-2011, 12:11 PM
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2008 SL65, 2006 SLK55(sold)
More questions about Muffler Delete

I have been looking further into doing a muffler delete on my SL65 as opposed to spending the extra cash on more aggressive mufflers but I have been cautioned that going with a muffler delete as opposed to having mufflers on the car will cause a loss in horse power rather than increasing or keeping it the same. I heard this before but figured with the Cats and Turbos in line how much could it hurt to remove the mufflers. It doesn't appear that a muffler delete has slowed Benz-O-Rama's SL600. Any input from the guys who have done this.
Old 11-14-2011, 05:42 PM
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After hearing Benz-O-Rama's audio clip I had the mufflers removed from my SL65. The car sounds amazing. It's especially pleasurable at star tup. I haven't noticed any degradation in performance.

This mod cost me $125 at a local muffler shop.

I took a sound clip of mine with my cell phone but it just doesn't do the sound justice.


Originally Posted by sl65amg2008
I have been looking further into doing a muffler delete on my SL65 as opposed to spending the extra cash on more aggressive mufflers but I have been cautioned that going with a muffler delete as opposed to having mufflers on the car will cause a loss in horse power rather than increasing or keeping it the same. I heard this before but figured with the Cats and Turbos in line how much could it hurt to remove the mufflers. It doesn't appear that a muffler delete has slowed Benz-O-Rama's SL600. Any input from the guys who have done this.
Old 11-15-2011, 02:30 AM
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I just got finished installing the RENNtech V3 lowering module and that is the only way I would go on lowering after seeing what you can do with this handy device. Any way, I think I am going with the muffler delete for starters on the exhaust to see what the outcome is; cheap and awesome sounding(not much to loose by trying). I hooked up with a local Dyno shop and have an appointment for Wednesday evening to see what the SL65 has in her before any mods. Then I intend to take it there after every mod including exhaust to see the effects....it is the only way to know for sure. I will have pics in the next few days to show what the module is capable of and then the results of the Dyno testing with everything factory stock. I have a friend who is a diesel mechanic and does a lot of custom stainless exhausts for trucks so he said he would weld up some stainless pipe for me to delete the mufflers. He said he has a lot of 6 inch lying around....do you think that would be too big
Old 11-15-2011, 02:30 AM
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2007 Väth SL65 AMG. 2007 BMW Alpina B5s. 2007 BMW M6.
I had all my mufflors/silencors/cats removed, and replaced them with just straight pipes all the way.
We dynoed before and after, and there was no loss in the HP department.
Nor gain!
But a big gain in sound, since it sounded like a sewing machine to begin with...

http://www.youtube.com/watch?v=hCeosSewCmo

Last edited by maxabo; 11-15-2011 at 02:36 AM.
Old 11-15-2011, 10:40 AM
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Originally Posted by maxabo
I had all my mufflors/silencors/cats removed, and replaced them with just straight pipes all the way.
We dynoed before and after, and there was no loss in the HP department.
Nor gain!
But a big gain in sound, since it sounded like a sewing machine to begin with...

http://www.youtube.com/watch?v=hCeosSewCmo
Thanks Maxabo.....that is the information I was looking for. I couldn't have explained it better myself. A "sewing machine", that is about how mild my SL65 sounds currently. So we are going with opening up the mufflers and running straight stainless through the inside and then buttoning them back up....keeps me "looking" legal with the authorities and no cutting off the AMG tips......I can't see any down side and saves a lot of money to put in more useful mods.
Old 11-15-2011, 12:08 PM
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Eurocharged 2004 E500, Eurocharged ECU/TCU 2005 SL600, 2010 Caddy SwaggerWagon
You're gonna love it, uncorked. Everybody does....
Old 11-15-2011, 05:16 PM
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Originally Posted by Benz-O-Rama
You're gonna love it, uncorked. Everybody does....
December 1st she goes up on blocks for the winter and then I hope to get serious with the mods. I am going to pull the mufflers first and send them over to my friend....he has the TIG welder. Others include ECU/TCU upgrade and new IC Pump. New wheels if I can ever make a desicion.....wish someone made a CF front lip.

Can't wait to hear the uncorked version!
Old 11-16-2011, 05:49 AM
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2007 Väth SL65 AMG. 2007 BMW Alpina B5s. 2007 BMW M6.
Originally Posted by sl65amg2008
.....wish someone made a CF front lip.
Me too!
For a 2007, that is.
Strangely, the lips for -05 & -06 don't fit...
Old Today, 04:35 PM
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Lurking
How is the interior sound? Any drone?

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