Backbox/muffler delete
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Re: Backbox/muffler delete
I paid my buddy at the exhaust place round the corner from my unit £50 to cut my back boxes out and £50 to cut my secondary cats out on my first RS..... that was a good day.
Audi RS4 B5 + Audi Q7 4.2TDi
Gone but not forgotten
2017 Mercedes E63S W213 1033/1400nm
2013 Mercedes E63S W212 740/1200nm
2010 Nissan GT-R SVM 680R
2010 RS6 C6 Avant Stage 2 730/1088nm
Gone but not forgotten

2017 Mercedes E63S W213 1033/1400nm
2013 Mercedes E63S W212 740/1200nm
2010 Nissan GT-R SVM 680R
2010 RS6 C6 Avant Stage 2 730/1088nm
Re: Backbox/muffler delete
Yup, clamped on tailpipe is so halfords.IanH755 wrote:Just seen this and had to LOL at the price - £900 for a back-box removal when mine only cost me £300 at MIJ Exhausts -
http://quicksilver-exhausts.myshopify.c ... ns-2008-10
Re: Backbox/muffler delete
The bends are shocking and the welding looks to be average at best too!
***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: Backbox/muffler delete
After reading through this post i decided to have this done.
A much better sound than stock. Full throttle accelerations sound the business, and very minimal / no drone at crusing speed.
An inexpensive mod and personally I think it sounds better than offerings from milltek.
Best thing about it all is it all looks stock as opted for gutting the mufflers, so all orginal hangers and mounts for exhaust have been used.
Here are some pics Had the wheels powder coated in Satin black. Quite happy with them, no need to clean them as often and makes the car look more aggressive.
Leaving all the chrome bits as they are, thintk they contrast quite nicely.
Next on the agenda is the brakes!
Bhav
A much better sound than stock. Full throttle accelerations sound the business, and very minimal / no drone at crusing speed.
An inexpensive mod and personally I think it sounds better than offerings from milltek.
Best thing about it all is it all looks stock as opted for gutting the mufflers, so all orginal hangers and mounts for exhaust have been used.
Here are some pics Had the wheels powder coated in Satin black. Quite happy with them, no need to clean them as often and makes the car look more aggressive.
Leaving all the chrome bits as they are, thintk they contrast quite nicely.
Next on the agenda is the brakes!
Bhav
MY09 C6 AVANT 843bhp in progress
MY10 C6 SALOON MRC 775ps
MY15 D4 S8 MRC 676ps
MY14 F10 M5 DMS 748bhp
MY10 C6 RS6 SALOON MRC 719.9ps
MY10 C6 SALOON MRC 775ps
MY15 D4 S8 MRC 676ps
MY14 F10 M5 DMS 748bhp
MY10 C6 RS6 SALOON MRC 719.9ps
Re: Backbox/muffler delete
Ah good work Bhav.RS6BHAV wrote:After reading through this post i decided to have this done.
A much better sound than stock. Full throttle accelerations sound the business, and very minimal / no drone at crusing speed.
An inexpensive mod and personally I think it sounds better than offerings from milltek.
Best thing about it all is it all looks stock as opted for gutting the mufflers, so all orginal hangers and mounts for exhaust have been used.
Here are some pics Had the wheels powder coated in Satin black. Quite happy with them, no need to clean them as often and makes the car look more aggressive.
Leaving all the chrome bits as they are, thintk they contrast quite nicely.
Next on the agenda is the brakes!
Bhav
Am I right in saying that you've removed all the material from inside the back box then??
Daytona Grey C6 RS6 Avant
Ebony Black C5 RS6 Plus - Gone
Ebony Black C5 RS6 Plus - Gone
Re: Backbox/muffler delete
longman h wrote:Ah good work Bhav.RS6BHAV wrote:After reading through this post i decided to have this done.
A much better sound than stock. Full throttle accelerations sound the business, and very minimal / no drone at crusing speed.
An inexpensive mod and personally I think it sounds better than offerings from milltek.
Best thing about it all is it all looks stock as opted for gutting the mufflers, so all orginal hangers and mounts for exhaust have been used.
Here are some pics Had the wheels powder coated in Satin black. Quite happy with them, no need to clean them as often and makes the car look more aggressive.
Leaving all the chrome bits as they are, thintk they contrast quite nicely.
Next on the agenda is the brakes!
Bhav
Am I right in saying that you've removed all the material from inside the back box then??
Thanks, yes all the insides are now empty.
MY09 C6 AVANT 843bhp in progress
MY10 C6 SALOON MRC 775ps
MY15 D4 S8 MRC 676ps
MY14 F10 M5 DMS 748bhp
MY10 C6 RS6 SALOON MRC 719.9ps
MY10 C6 SALOON MRC 775ps
MY15 D4 S8 MRC 676ps
MY14 F10 M5 DMS 748bhp
MY10 C6 RS6 SALOON MRC 719.9ps
Re: Backbox/muffler delete
So the pipes within the back box are still there but everything else has been removed?
Daytona Grey C6 RS6 Avant
Ebony Black C5 RS6 Plus - Gone
Ebony Black C5 RS6 Plus - Gone
- Shinobi675
- 5th Gear
- Posts: 1368
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Re: Backbox/muffler delete
I like the black wheels with the original chrome. Lots of people putting on the black look, but sometimes it looks a bit too much. That looks great.
996 C4S, B8 RS4, CBR600RR & a little ZXR400
Re: Backbox/muffler delete
Yes mate the pipes are still in.longman h wrote:So the pipes within the back box are still there but everything else has been removed?
Bhav
MY09 C6 AVANT 843bhp in progress
MY10 C6 SALOON MRC 775ps
MY15 D4 S8 MRC 676ps
MY14 F10 M5 DMS 748bhp
MY10 C6 RS6 SALOON MRC 719.9ps
MY10 C6 SALOON MRC 775ps
MY15 D4 S8 MRC 676ps
MY14 F10 M5 DMS 748bhp
MY10 C6 RS6 SALOON MRC 719.9ps
Re: Backbox/muffler delete
Thanks very much my thoughts exactly.Shinobi675 wrote:I like the black wheels with the original chrome. Lots of people putting on the black look, but sometimes it looks a bit too much. That looks great.
I saw an all black one and although it did look mean, wasnt my cuppa tea.
MY09 C6 AVANT 843bhp in progress
MY10 C6 SALOON MRC 775ps
MY15 D4 S8 MRC 676ps
MY14 F10 M5 DMS 748bhp
MY10 C6 RS6 SALOON MRC 719.9ps
MY10 C6 SALOON MRC 775ps
MY15 D4 S8 MRC 676ps
MY14 F10 M5 DMS 748bhp
MY10 C6 RS6 SALOON MRC 719.9ps
Re: Backbox/muffler delete
Brilliant thanks for the info.RS6BHAV wrote:Yes mate the pipes are still in.longman h wrote:So the pipes within the back box are still there but everything else has been removed?
Bhav
Daytona Grey C6 RS6 Avant
Ebony Black C5 RS6 Plus - Gone
Ebony Black C5 RS6 Plus - Gone
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- 2nd Gear
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Re: Backbox/muffler delete
Looks like a cat found its way up the exhast and got stuck
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- 2nd Gear
- Posts: 199
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Re: Backbox/muffler delete
How is it on a cold start? Need to get a video I'm contemplating this nowRS6BHAV wrote:After reading through this post i decided to have this done.
A much better sound than stock. Full throttle accelerations sound the business, and very minimal / no drone at crusing speed.
An inexpensive mod and personally I think it sounds better than offerings from milltek.
Best thing about it all is it all looks stock as opted for gutting the mufflers, so all orginal hangers and mounts for exhaust have been used.
Here are some pics Had the wheels powder coated in Satin black. Quite happy with them, no need to clean them as often and makes the car look more aggressive.
Leaving all the chrome bits as they are, thintk they contrast quite nicely.
Next on the agenda is the brakes!
Bhav
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- 4th Gear
- Posts: 759
- Joined: Tue Mar 24, 2015 1:36 pm
- Location: Middlesbrough, United Kingdom
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Re: Backbox/muffler delete
Cold start is bad.. it always is, you'll never avoid that.
Audi RS4 B5 + Audi Q7 4.2TDi
Gone but not forgotten
2017 Mercedes E63S W213 1033/1400nm
2013 Mercedes E63S W212 740/1200nm
2010 Nissan GT-R SVM 680R
2010 RS6 C6 Avant Stage 2 730/1088nm
Gone but not forgotten

2017 Mercedes E63S W213 1033/1400nm
2013 Mercedes E63S W212 740/1200nm
2010 Nissan GT-R SVM 680R
2010 RS6 C6 Avant Stage 2 730/1088nm
Re: Backbox/muffler delete
Stu - The cold start is very loud, you literally have to shout to be heard from 2m away if you are stood at the back (tested it when I did mine). You can get it mapped "out" but all that does is reduce the time spent on the cold start cycle from 30-45 secs to 5 secs but it'll still be loud for those 5 seconds.
Alternatively you could get the whole SAI system removed. It's just an air pump & 2 combi-valves which'll need blanking and you get less than 1 second of "cold start" noise.
Alternatively you could get the whole SAI system removed. It's just an air pump & 2 combi-valves which'll need blanking and you get less than 1 second of "cold start" noise.
***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)
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