M275 V12 Bi-Turbo Platform Technical discussion relating to models sharing the M275 V12 Bi-Turbo (V12 TT). Including SL600, SL65 AMG, CL600, CL65 AMG, S600, S65 AMG.
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V12TT Exhaust Modification.....

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Old 10-05-2011, 07:16 PM
  #26  
NRL
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Originally Posted by Speedriven
There's not a lot of drone on the V12 cars - we've done several straight-out exhausts where it's been legal and the cars all sound awesome. Not nearly as loud as you think they'll be.
Can I get a double confirm it's not as loud as I think it be?
Someone mention drone..

I guess I can put the mufflers back on, if it is..
Old 10-05-2011, 07:52 PM
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Originally Posted by NRL
Can I get a double confirm it's not as loud as I think it be?
Someone mention drone..

I guess I can put the mufflers back on, if it is..
Click on the YouTube link in my sig. This is what an uncorked V12TT sounds like.
Old 10-05-2011, 08:01 PM
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Originally Posted by NRL
Can I get a double confirm it's not as loud as I think it be?
Someone mention drone..

I guess I can put the mufflers back on, if it is..
I think the drone comes in when they do the resonator delete.

When in the car and the radio OFF I can here my muffler delete loudest at 1500 -2000 rpm, at higher rpm I barely notice it, maybe because of the other noises at higher speeds, wind, road, tire ?

With radio ON I barely notice it at all times, but my wife did notice a change and likes a perfectly silent car better.

I'll also say its a bit more fun to drive now that I can hear what the motor is doing.

Where are you in So Ca, if close to me your welcome to hear it.

.
Old 10-08-2011, 06:04 AM
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Originally Posted by NRL
Can I get a double confirm it's not as loud as I think it be?
Someone mention drone..

I guess I can put the mufflers back on, if it is..
There is no drone, just the louder exhaust note that you hear. Even at highway speeds, there is no drone. I would make it louder, if I had the chance....
It's the best thing I've done to the car, besides the ECU tune.
I cannot stop driving it....


And to all waiting on the video of my exhaust mod............ I am posting that video today....sorry for the wait.
My 1 year old and 8 month preggo wife take away from my play time.....

Last edited by Vabene7; 10-08-2011 at 06:19 AM.
Old 10-19-2011, 03:16 PM
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I am looking to add an electric remote cut out to my S600 which already has an ECU and TCU tune. My dad mostly drives the car, so I want to keep it nice and quiet for him most of the time. I know there is a portion of the exhaust that merges into one pipe. I'm thinking this would be the easiest place to put the cutout.

QTP now makes a remote driven cut out that would be perfect for the drag strip:

http://www.quicktimeperformance.com/QTEC/index.php

Any idea what the diameter of the "single exhaust" section is and whether there is any room for installing a cut out?
Old 10-19-2011, 04:23 PM
  #31  
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Nicest one I've seen yet.. it's going to be nice to be able to turn it off and on.

What's the diameter of the exhaust on a CL65, S65, SL65? 3" or 3.5"?
Old 11-23-2011, 03:13 PM
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Need a diameter!
Old 11-26-2011, 06:32 AM
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I will measure the pipe I have in my garage and get back to you.
Additionally, I removed that merged, center section. There was not enough room to put the cutouts in that location. They should go directly after that tight area. Go back to post #23 and look and the 2nd photo. In that photo you will see two cans located before the mufflers. Those are resonators. You will need to remove those and install the cutouts in that location. Also needed are bolt on, down-turned flanges so your hot exhaust gases aren't being pushed onto your suspension parts. That's exactly what I did. The car is still extremely quiet when the cutouts are closed even without the resonators. I also removed the single section of pipe and ran dual pipes. Go here for a photo of my exhaust - https://mbworld.org/forums/s-class-w...t-cutouts.html

I also wouldn't use QTP. My personal opinion is that they fail prematurely and their customer service is less than helpful to resolve craftmanship problems.
DMH cutouts are made of better material and are warrantied for years short of smashing them between the undercarriage and the ground. http://www.dmhperformance.com/

Last edited by Vabene7; 11-27-2011 at 10:55 PM.

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