SL-Class (R230) 2003 -- 2012: Discussion on the SL500, SL550, SL600

SL/R230: Exhaust electric cut out bypass fitted.

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Old Sep 4, 2019 | 01:10 PM
  #1  
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SL 350 R230 (3.7L with AMG Speedshift autobox)
Exhaust electric cut out bypass fitted.

All done, lucky to have an excellent exhaust guy I know, I did some of the welding myself to help out.











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Old Sep 4, 2019 | 01:36 PM
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We're gonna need sound clips

Nicely done
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Old Sep 4, 2019 | 09:47 PM
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Beautiful work. Def need audio clips!
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Old Sep 5, 2019 | 08:14 AM
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You have a 350 or 55?
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Old Sep 5, 2019 | 09:17 AM
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Mercedes SL r230
Can you put a video to hear the sound?
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Old Sep 5, 2019 | 02:20 PM
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SL 350 R230 (3.7L with AMG Speedshift autobox)
Here's a video I just did, will do another when stationary.

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Old Sep 5, 2019 | 02:58 PM
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Mercedes SL r230
Awesome sound, you can see his happy face with his new exhaust pipe sound.
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Old Sep 5, 2019 | 05:34 PM
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Very nice!
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Old Sep 5, 2019 | 08:29 PM
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Great video and love the sound!
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Old Sep 5, 2019 | 11:45 PM
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What was the cost of the kit? Installation?
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Old Sep 6, 2019 | 08:58 AM
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SL 350 R230 (3.7L with AMG Speedshift autobox)
Originally Posted by danaw007
What was the cost of the kit? Installation?
The kit was £109 only from ebay.

Installation fortunately was on the house ! although I did do some of the welding and fitting myself !
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Old Sep 6, 2019 | 01:10 PM
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Mercedes SL r230
Can you put the link on the page where I bought the bypass?
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Old Sep 8, 2019 | 10:09 PM
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sl600
I had some cut outs for my car for an year but put the project to the side, but couldn't find a spot because how i would want it to be, loud pipes out the back while the muffler will be a down pipe (all just because i want it to shoot flames from the rear.) I'll probably have to buy a after market muffler. Like a center mid muffler at the same spot as yours but the cut outs run to the back.
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Old Sep 9, 2019 | 07:24 AM
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SL 350 R230 (3.7L with AMG Speedshift autobox)

Order of video:
  • Valves closed
  • Left cut out open
  • Left and right cut out open
  • Valves closed again

Link for the pipes and cut out kit:
https://www.ebay.co.uk/itm/2x-2-5-El...72.m2749.l2649
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Old Sep 10, 2019 | 12:29 AM
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Very demonstrative and convincing video! I may go this route after I see what it sounds like with my secondary cats removed this fall. Where didn’t you sneak the wiring in the trunk at? Obviously don’t want water intrusion in the trunk �� thanks
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Old Sep 11, 2019 | 08:11 AM
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SL 350 R230 (3.7L with AMG Speedshift autobox)
Originally Posted by danaw007
Very demonstrative and convincing video! I may go this route after I see what it sounds like with my secondary cats removed this fall. Where didn’t you sneak the wiring in the trunk at? Obviously don’t want water intrusion in the trunk �� thanks
I ran the wires down through the existing grommet hole for the battery breather, was perfect and comes out in a convenient place underneath,
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Old Sep 11, 2019 | 09:52 AM
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Originally Posted by A1EK
I ran the wires down through the existing grommet hole for the battery breather, was perfect and comes out in a convenient place underneath,
Thanks, that makes it an easy decision for me. Perhaps with this setup I’ll leave the secondary cats in place. I believe your two videos are going to prompt a lot of owners to follow suit.
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Old Sep 12, 2019 | 02:16 PM
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Great videos. Love the sound with them both open!
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Old Sep 20, 2019 | 11:15 AM
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Mercedes sl
Exhaust cutout remote

Originally Posted by A1EK
Here's a video I just did, will do another when stationary.

https://youtu.be/hSat2KL5kO8
HI When you bought the cutout kit did it come with one or 2 remotes? Q: can you use just one remote to open each valve? Or do you have to use both independently?
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Old Sep 20, 2019 | 02:45 PM
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SL 350 R230 (3.7L with AMG Speedshift autobox)
Originally Posted by VV71
HI When you bought the cutout kit did it come with one or 2 remotes? Q: can you use just one remote to open each valve? Or do you have to use both independently?
It came with 2 remotes, however I had a spare remote that had 4 buttons so I programmed it two the two remotes, now I have the one remote mounted on my dash that controls all.
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Old Sep 20, 2019 | 04:48 PM
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Mercedes sl
Exhaust cut outs.

Thanks for the info.
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Old Aug 18, 2020 | 04:58 PM
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Hi A1EK,

Im trying to find a video to convince me to have this done on my car, I've found this thread but I'm unable to see the video?

It says its private? is this a problem my end do you think.

Kindest regards
Wayne
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