Box behind rear Exhaust, what is it? - Mercedes Benz SLK Forum

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#1 Old 03-31-2016
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Box behind rear Exhaust, what is it?

Gearing up for some rust preventative work under the car and saw this rusty thing, I dont think its the CAT, thats more central. So what is it and what does it do? Can I get rid of it completely for a straight through pipe and what is the result of doing so?

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#2 Old 03-31-2016
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resonator?


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#3 Old 04-01-2016
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I'm going to agree with jbanks on this one. it appears to be a resonator of some sort, or maybe an additional muffler? either way, you should have no adverse effects with removing it, other than a different exhaust note. without seeing a larger picture of your exhaust system it's hard to say specifically how your exhaust note might change though. if you're looking for a "better" sound from your exhaust and performance gains aren't your goal, i would suggest/recommend removing the resonators/mufflers one by one, starting all the way rear of the car, once you have the sound you're looking for, stop and weld piping to match the factory shape.
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#4 Old 04-01-2016
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Resonator.... so some kind of sound reduction thingy? Not after any type of improvement, this resonator is flaking and on its way out, so going to ditch it and see what happens.

Thanks Gents.
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#5 Old 04-10-2016
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Did you remove the resonator and what were the results?
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#6 Old 04-12-2016
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No, not yet. keep you posted.
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#7 Old 05-04-2016
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Anyone have a clear photo of the std R170 system, the part number and online parts catalog please?

Cheers.
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#8 Old 05-04-2016
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Originally Posted by Jetl3on View Post
Anyone have a clear photo of the std R170 system, the part number and online parts catalog please?

Cheers.
https://www.slkworld.com/general-disc...e-catalog.html


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#9 Old 05-06-2016
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SLK Lite!!



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#10 Old 05-11-2016
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cheers Jeff.
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#11 Old 05-11-2016
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So, whats the sound like? Any difference?
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#12 Old 05-14-2016
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There is a quiet storm at low revs, a lion cub roar, which is quite nice but nothing to write home about. For such quiet refined cars, it seems like sacrilege doing this to them.
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