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Richards6
Brand New, Welcome :)


Car: S6 (C5)

Joined: 05 Dec 2016
Posts: 25

Location: Surrey/ Sussex/ Kent borders

PostPosted: Fri Jun 02, 2017 5:26 pm  Reply with quoteBack to top

Having searched for any previous articles about this and not found anything, I was hoping somebody could advise me on reasonable options please?

I can't justify (or afford) Milltek which is simply too expensive, and also from what I've read they don't provide as good a sound as some people expected?

Actually, I wasn't planning on doing this for a while, but am now having to look in to it since my nearside rear box now has something loose in it causing a very annoying rattling/ tapping noise much of the time and I don't want to waste money simply replacing that when what I want is a nicer burble.

I have read somewhere that a standard RS6 exhaust will provide that but I don't want to buy a used one.

Any other suggestions or advice much appreciated 😧

Thanks
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Richards6
Brand New, Welcome :)


Car: S6 (C5)

Joined: 05 Dec 2016
Posts: 25

Location: Surrey/ Sussex/ Kent borders

PostPosted: Fri Jun 09, 2017 10:56 am Reply with quoteBack to top

Richards6 wrote:
Having searched for any previous articles about this and not found anything, I was hoping somebody could advise me on reasonable options please?

I can't justify (or afford) Milltek which is simply too expensive, and also from what I've read they don't provide as good a sound as some people expected?

Actually, I wasn't planning on doing this for a while, but am now having to look in to it since my nearside rear box now has something loose in it causing a very annoying rattling/ tapping noise much of the time and I don't want to waste money simply replacing that when what I want is a nicer burble.

I have read somewhere that a standard RS6 exhaust will provide that but I don't want to buy a used one.

Any other suggestions or advice much appreciated 😧

Thanks


Well in the absence of any replies and after a bit more research, I've decided to go for a used RS6 version after all and it'll be fitted next week.
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IanH755
knowledgeable


Car: C6 RS6 Avant
Power: 907hp
Torque: 830ft/lbs

Joined: 01 Jan 2014
Posts: 361

Location: Nr Maidstone, Kent

PostPosted: Mon Jun 12, 2017 2:41 pm Reply with quoteBack to top

Yeah the S6/RS6 section is dead on here.

The RS6 exhaust - is the cat-back only? You could take off the back boxes which makes a loud but wonderful noise (I did this on my RS6) but I found that a custom one was much better and especially if it had smaller back-boxes and no "H-Pipe" (where the two pipes are joined for more gas flow) as this kept each engine bank firing down a separate exhaust giving a much more pronounced V8 noise.

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Old - Daytona C5 RS6 Avant - 500hp & 550ft/lbs - MRC'd

New - Daytona C6 RS6 Avant - 907HP & 830ft/lbs - MRC'd
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Richards6
Brand New, Welcome :)


Car: S6 (C5)

Joined: 05 Dec 2016
Posts: 25

Location: Surrey/ Sussex/ Kent borders

PostPosted: Mon Jun 12, 2017 2:57 pm Reply with quoteBack to top

Thanks Ian, I have noticed the ghostly quiet on here although unsure why 🤔

Anyway, you're right, it is the catback that I'm going for and its being fitted tomorrow at QS Tuning in Haywards Heath after speaking to Kim, the owner there. During my research I found some old posts about him having a few of them leftover when people upgraded to Milltek, etc. So although it's used and has been stored for some years, it is of course s/s and I understand relatively unused since it was changed early in it's life. Very reasonable costwise too. He has one other left if anyone is thinking of doing the same.

I'll post again to give my opinion of the sound but am fairly certain it will be just enough of an improvement as I don't want it too loud but definitely  more burblier than the standard S6 sound. Ive listened to comparisons on YouTube so I have a fair idea of what to expect.
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IanH755
knowledgeable


Car: C6 RS6 Avant
Power: 907hp
Torque: 830ft/lbs

Joined: 01 Jan 2014
Posts: 361

Location: Nr Maidstone, Kent

PostPosted: Mon Jun 12, 2017 5:12 pm Reply with quoteBack to top

Hi Richard, the thing with OEM systems is the back-boxes for either S6/RS6 are very sound deadening to the V8 burble but worst case you can always chop a hole in the oem boxes and remove the deadening as a very cheap way of making it sound deeper/louder but retaining the OEM look.

Also, will the RS6 ovals fit the Round S6 bumper?

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Old - Daytona C5 RS6 Avant - 500hp & 550ft/lbs - MRC'd

New - Daytona C6 RS6 Avant - 907HP & 830ft/lbs - MRC'd
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Richards6
Brand New, Welcome :)


Car: S6 (C5)

Joined: 05 Dec 2016
Posts: 25

Location: Surrey/ Sussex/ Kent borders

PostPosted: Mon Jun 12, 2017 5:41 pm Reply with quoteBack to top

No, but QST are going to make the necessary modification - basically to cut around the rear valence aperture (my son-in-law will then fit some trim apparently - not sure what, but he sounded confident and he's not one to bodge stuff and he's also a mechanic by trade).

Thanks for the tip about "chopping a hole" in it 😳 😱- again, I think I'll be happy with the slightly extra sound of the "standard" RS6 exhaust but if it's not enough, then I'll consider my options further. I'll have to find a way of recording the sound and putting it on here - so guess it's best to video it once I find out how to do that 🤔

Thanks for your advice and info anyway especially since there's been no other responses so far.

I know as you said that there's not many postings here on this forum nowadays, but I do notice that there are a lot of recent "viewings", even if there's no comments. From what I gather though, there's very few S6 owners on here anymore (why? this is an "S/RS" forum after all!) and to me it seems that RS6 owners "generally" appear to disregard and ignore the S6 as irrelevant and inferior (and whilst it obviously isn't in quite the same league as an RS6 - especially your C6 RS6! -  I think that's very unfair as it still has a lot going for it - and it is understated and under-rated too IMO).
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Richards6
Brand New, Welcome :)


Car: S6 (C5)

Joined: 05 Dec 2016
Posts: 25

Location: Surrey/ Sussex/ Kent borders

PostPosted: Wed Jun 14, 2017 9:35 am Reply with quoteBack to top

Well, QST fitted the exhaust yesterday and it has been a fantastic transformation - to say I'm pleased would be an understatement 😁. I'm now driving with such a big grin on my face - though I always enjoyed driving it before - but the experience now has elevated it to such a new high and it far exceeded my expectations. Words obviously can't convey the sound so I'll  have to video it and post here and/ or YouTube in due course when I get someone to help me and lend me a hand.

Anyway, grateful thanks and all credit to Kim at QST who did confirm that it wasn't quite straightforward because of needing to add reducers due to the different bore size, and also cutting out around the rear valance to accommodate the larger oval end pipes. Certainly needed his skill to do that so perhaps not worth attempting unless you have the necessary ability and know how ( which obviously I didn't 😂)
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