Anyone removed the stock exhaust backboxes?
Re: Anyone removed the stock exhaust backboxes?
Damn, that's a good idea. Think I'll speak to MRC about doing this myself, maybe with different tips so not to copy you too much, they do look good though!
Have they got the measurements from yours still? I need to visit them soon for a remap so maybe they could make a set of these ready to slip on when i go up there.
Thanks Ian, video's good too cheers.
Have they got the measurements from yours still? I need to visit them soon for a remap so maybe they could make a set of these ready to slip on when i go up there.
Thanks Ian, video's good too cheers.
2003 C5 RS6 Avant Daytona Grey
Re: Anyone removed the stock exhaust backboxes?
I had mine done at a custom exhaust place in Swindon - Bells silencers - and took about 2 hrs. As it was custom there is no pattern or measurments to give you but any exhaust place could knock one up in a few hours.
***OLD*** Daytona C5 RS6 Avant - MRC'd - 500HP & 820NM (PistonHeads Link).
***NEW*** Daytona C6 RS6 Avant - MRC'd - 925HP & 1150NM (PistonHeads Link)
***NEW*** Daytona C6 RS6 Avant - MRC'd - 925HP & 1150NM (PistonHeads Link)
Re: Anyone removed the stock exhaust backboxes?
Cool, thanks for the info mate, I'll see if I can find somewhere local then.
2003 C5 RS6 Avant Daytona Grey
Re: Anyone removed the stock exhaust backboxes?
I've lost the number for the proper Audi sleeves but I'll find it out tomorrow, they are £24 each and look much better than the Universal fitting currently on my right pipe.
*EDIT* - Just seen you're in Southampton, I'll be in Winchester tomorrow night until 7pm you fancy a quick meet and listen before you do this yourself? Chick me a PM if you're interested.
*EDIT* - Just seen you're in Southampton, I'll be in Winchester tomorrow night until 7pm you fancy a quick meet and listen before you do this yourself? Chick me a PM if you're interested.
***OLD*** Daytona C5 RS6 Avant - MRC'd - 500HP & 820NM (PistonHeads Link).
***NEW*** Daytona C6 RS6 Avant - MRC'd - 925HP & 1150NM (PistonHeads Link)
***NEW*** Daytona C6 RS6 Avant - MRC'd - 925HP & 1150NM (PistonHeads Link)
Re: Anyone removed the stock exhaust backboxes?
Audi Stainless Sleeves 65mm - 8L9253139A - £24ea from Oxford Audi
Well, that makes a big difference! Had the brace bar welding across this morning and driven down to Alresford and all the 1800-2300rpm resonance drone (and slight vibration felt through your feet) has gone and the exhaust note has increased in pitch slightly. It almost sounds like a nasally Subaru boxer 4 (best example I can think of). I "think", although it may be me thinking too hard to find differences, that it's slightly quieter now as well but that may well just be down to the lack of drone at those lower rev points.
It's certainly more civilised around town from inside the car but still sounds just as loud outside according to my mate who did the drive-by vids for me.
Overall, I'm very happy with it!
Well, that makes a big difference! Had the brace bar welding across this morning and driven down to Alresford and all the 1800-2300rpm resonance drone (and slight vibration felt through your feet) has gone and the exhaust note has increased in pitch slightly. It almost sounds like a nasally Subaru boxer 4 (best example I can think of). I "think", although it may be me thinking too hard to find differences, that it's slightly quieter now as well but that may well just be down to the lack of drone at those lower rev points.
It's certainly more civilised around town from inside the car but still sounds just as loud outside according to my mate who did the drive-by vids for me.
Overall, I'm very happy with it!
***OLD*** Daytona C5 RS6 Avant - MRC'd - 500HP & 820NM (PistonHeads Link).
***NEW*** Daytona C6 RS6 Avant - MRC'd - 925HP & 1150NM (PistonHeads Link)
***NEW*** Daytona C6 RS6 Avant - MRC'd - 925HP & 1150NM (PistonHeads Link)
Re: Anyone removed the stock exhaust backboxes?
You big wuss Ian.............get the job done properly and stop being a pussy



950 nm torque!
Ohh running bridgestones because they are the best
Ohh running bridgestones because they are the best

Re: Anyone removed the stock exhaust backboxes?
F*cking typical, met up with SuprSi and on the way home I ripped the tyre sidewall apart parking up to get some petrol!!!! Just before Goodwood and with my missus raging as she can't see her chick flick now!!!!!!
F*CK!!!!!!
F*CK!!!!!!
***OLD*** Daytona C5 RS6 Avant - MRC'd - 500HP & 820NM (PistonHeads Link).
***NEW*** Daytona C6 RS6 Avant - MRC'd - 925HP & 1150NM (PistonHeads Link)
***NEW*** Daytona C6 RS6 Avant - MRC'd - 925HP & 1150NM (PistonHeads Link)
Re: Anyone removed the stock exhaust backboxes?
Ah bugger, that sucks
You get it sorted?
Cheers for yesterday, car sounded awesome! I was really surprised how quiet it was at idle, then had a great note and decent (but not too excessive) volume on the throttle. Also was cool to see how your car ran on the MRC map, much stronger bottom end.
Let me know next time you're this way mate

Cheers for yesterday, car sounded awesome! I was really surprised how quiet it was at idle, then had a great note and decent (but not too excessive) volume on the throttle. Also was cool to see how your car ran on the MRC map, much stronger bottom end.
Let me know next time you're this way mate

2003 C5 RS6 Avant Daytona Grey
Re: Anyone removed the stock exhaust backboxes?
Another video, used a different mic which can capture bass and from my Sony Digicam, the first part is only 1500-2800rpm and the second is startup where the exhaust sounds very meaty when cold but after 30-45seconds (when the SAI turns off) the exhaust becomes very quiet, almost stock.
Full Throttle Video - I need a windshield for the mic as the wind noise can get annoying!
Full Throttle Video - I need a windshield for the mic as the wind noise can get annoying!
***OLD*** Daytona C5 RS6 Avant - MRC'd - 500HP & 820NM (PistonHeads Link).
***NEW*** Daytona C6 RS6 Avant - MRC'd - 925HP & 1150NM (PistonHeads Link)
***NEW*** Daytona C6 RS6 Avant - MRC'd - 925HP & 1150NM (PistonHeads Link)
Re: Anyone removed the stock exhaust backboxes?
...you forgot to add those...
https://www.youtube.com/watch?v=1QMOFEKOF88
https://www.youtube.com/watch?v=AOwzTIUCPTM
https://www.youtube.com/watch?v=1QMOFEKOF88
https://www.youtube.com/watch?v=AOwzTIUCPTM
If you can't go to the track, bring the track to you.
Mugello Blue C5 RS6 Avant
Viper Tuning ECU/TCU
MTM Bimoto wheels 9,5 x 19 ET 30 LK 5x112 with 275/30/19 tyres
MTM exhaust system cat back 4-pipe with throttle valves in 2 pipes, control
Yellow Koni's
Porsche 959, gone but not forgotten.
Fight ALS disease https://www.youtube.com/watch?v=wGFDWTC8B8g
Mugello Blue C5 RS6 Avant
Viper Tuning ECU/TCU
MTM Bimoto wheels 9,5 x 19 ET 30 LK 5x112 with 275/30/19 tyres
MTM exhaust system cat back 4-pipe with throttle valves in 2 pipes, control
Yellow Koni's
Porsche 959, gone but not forgotten.
Fight ALS disease https://www.youtube.com/watch?v=wGFDWTC8B8g
Re: Anyone removed the stock exhaust backboxes?
Hmmm, on my post I can see two embedded videos, are they missing on your view?


***OLD*** Daytona C5 RS6 Avant - MRC'd - 500HP & 820NM (PistonHeads Link).
***NEW*** Daytona C6 RS6 Avant - MRC'd - 925HP & 1150NM (PistonHeads Link)
***NEW*** Daytona C6 RS6 Avant - MRC'd - 925HP & 1150NM (PistonHeads Link)
Re: Anyone removed the stock exhaust backboxes?
I can see them..........she sounds nice 

950 nm torque!
Ohh running bridgestones because they are the best
Ohh running bridgestones because they are the best

Re: Anyone removed the stock exhaust backboxes?
Yup, they work for me also.
So are you going to leave the exhaust like this now?
How is the drone at around 80? I think you mentioned it was ok in a previous post?
So are you going to leave the exhaust like this now?
How is the drone at around 80? I think you mentioned it was ok in a previous post?
Daytona Grey C6 RS6 Avant
Ebony Black C5 RS6 Plus - Gone
Ebony Black C5 RS6 Plus - Gone
Re: Anyone removed the stock exhaust backboxes?
Nope, they're back to stock now for the week. I was out at the Goodwood FOS on Sunday so left them fitted until last night. Got a non-car forum meet on Saturday so they'll be going back on Friday night. The change over took 15mins as the non-Audi temporary sleeve on the right was a pain to start but the left side took less than 2 minutes.
The 70mph drone is gone and it's still fine at 80mph but the exhaust is quite loud anyway, but especially if you accelerate even slightly. I did 4hrs on Sunday at motorway speeds and it was never too loud etc but I'm probably more willing to put up with loud exhausts since my Skyline used to deafen me. On my airfield 120-140mph is very loud and drowned out my stereo at it's normal volume level.
The 70mph drone is gone and it's still fine at 80mph but the exhaust is quite loud anyway, but especially if you accelerate even slightly. I did 4hrs on Sunday at motorway speeds and it was never too loud etc but I'm probably more willing to put up with loud exhausts since my Skyline used to deafen me. On my airfield 120-140mph is very loud and drowned out my stereo at it's normal volume level.
***OLD*** Daytona C5 RS6 Avant - MRC'd - 500HP & 820NM (PistonHeads Link).
***NEW*** Daytona C6 RS6 Avant - MRC'd - 925HP & 1150NM (PistonHeads Link)
***NEW*** Daytona C6 RS6 Avant - MRC'd - 925HP & 1150NM (PistonHeads Link)
Re: Anyone removed the stock exhaust backboxes?
Mav's on Windows 8.1 now, lucky if he can see or do anything on his PC nowamanda1 wrote:I can see them..........she sounds nice

Avus Avant, RNS-E mk2 with sds and Bluetooth, Milltek, Hotchkis, Bilstein, Forge, ITG, A.C.E, Wagner, FBMFSW, MTM.
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