Backbox/muffler delete

5.0 V10 50v biturbo - 571 bhp
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IanH755
Top Gear
Posts: 1988
Joined: Thu Jan 02, 2014 12:50 pm
Location: Stoke and Norfolk

Re: Backbox/muffler delete

Post by IanH755 » Mon Dec 24, 2018 1:19 am

c3nturi0n wrote:
Sun Dec 23, 2018 10:42 pm
I have MIJ custom built exhaust... cats removed together with rear silencers - straight through pipes.

Very nice note when driven on motorways but it does have that droning sound that is tad annoying when driven in low gears / revs.
IanH755 wrote:
Tue Jun 28, 2016 10:45 pm
I did this and, whilst is sounds quite "mid-rangey" (not very deep at all) at low revs and pretty epic at full throttle, during the cold start it is stupidly loud! I mean you if you stand at the back of the you have to shout to be heard over it, not "raise your voice a bit" I mean SHOUT until the revs die off.

It didn't sound "droney" in the way a Non-Res exhaust does but it was so loud it was definitely intrusive at motorway speeds which, TBF, didn't really bother me that much.

So sounds great but stupidly loud at cold start.
Same experience with removing the back-boxes etc (at MIJ too!) about 2.5 years ago but the swap to a 3in system made the car sound miles better.
***OLD*** Daytona C5 RS6 Avant - MRC'd - 500HP & 820NM (PistonHeads Link).

***NEW*** Daytona C6 RS6 Avant - MRC'd - 955HP & 1200NM (PistonHeads Link)

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Badassgermanlook
2nd Gear
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Re: Backbox/muffler delete

Post by Badassgermanlook » Wed Jan 09, 2019 4:12 pm

Ok had a few tweeks made to the exhaust and im more than chuffed with the result. I had the secondary cats and small middle silencers removed plus new RS3 facelift tips fitted. I left the rear backboxes standard except for the tips.


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Audi RS6 V10 Avant

c3nturi0n
3rd Gear
Posts: 466
Joined: Tue May 29, 2018 10:50 am

Re: Backbox/muffler delete

Post by c3nturi0n » Tue Feb 26, 2019 12:37 pm

mine's running on custom MIJ (non-res) and it sounds great at speed.

The only downside if i could call it that way is some droning sound that i get at 20-35mph (London driving what can i say :) ).
2008 RS6 Avant (Monza Silver)
- Stage II MRC tune with gearbox (720PS/850Nm)
- MIJ Powerflow exhaust (non-res)
- H&R ARBs

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