URS6 Exhaust Box Removal!

86audicoupe · 21-03-13, 09:13 PM

Hello all

On my past Coupe GT I removed the rear silencer and welded a straight pipe in its place! Sounded excellent without being too loud. The S6 is far too quiet. My idea was to remove the centre silencer and again, replace with a straight pipe (keeping the rear silencer) but have it as a boltable section so I could put the silencer back in if need be. How much silencing does the centre box do? Would I be better off removing the rear? Will it effect the car's back pressure/smooth running?

Thanks

pimpdriver · 21-03-13, 10:00 PM

Turbos don't need back pressure. Get the gases out as quick as possible.

Willbo · 21-03-13, 10:12 PM

Straight through. Make those ears bleeeeeed

86audicoupe · 31-03-13, 09:26 AM

I've been quoted £150 to remove the middle box and weld in straight pipe. They are twins going front to rear and the company are going to make a new exhaust bracket to go on the straight section. Good price or rip off? Me and Dad would do it ourselves but don't have pipe or flaring equipment.

Does anyone know how loud it will be with the middle box removed? Or should I get the back box removed instead?!

quattrokid · 31-03-13, 09:54 AM

Just go straight through from the turbo back and exit via a DTM back box

I did

Sounded awesome

86audicoupe · 31-03-13, 10:03 AM

Quote:

Originally Posted by quattrokid

Just go straight through from the turbo back and exit via a DTM back box

I did

Sounded awesome

Do you have any videos or sound clips Rich? Does it drone at all?

spink · 31-03-13, 12:46 PM

I ran one of my previous s6s with just the downpipe and cats for a bit while i repaired the exhaust(had cracked round the joints on one of the boxes),sounded good and not too loud.Never went on a motorway with it though so can't say if it was annoying at those speeds

If i were you I would get a single box stainless system made for it,saves a shit load of weight and sounds good.

btw Richie(hoffer on s2forum) can make you a nice system and he is only a few miles from you

quattrokid · 31-03-13, 04:44 PM

I had a Strumung turbo back 3" via a sports free flow cat then straight to a DTM back box
Mine droned around town because it's an auto
A few hundred revs more and it's in the sweet spot, give the beans and sounds like a V8... has been observed by Simmo up here. Now on a standard exhaust again.

86audicoupe · 31-03-13, 05:16 PM

Thank you both for your replies! Perhaps it won't be ridiculously loud then! Spink, wherabouts is Richie based then?

quattrokid · 31-03-13, 05:27 PM

No it's not too intrusive BUT it's bloody well addictive mate !!

Get a sports cat in there, then remap it

is yours auto? Canny remember off the top of my head.
Stick in a better air filter as well

21-03-13, 10:00 PM	#2
pimpdriver Devon Pastie Muncher Classic Audi Club Member Join Date: Jul 2007 Location: Calne Wiltshire Posts: 7,530	Turbos don't need back pressure. Get the gases out as quick as possible. __________________ Winter tyres now! Driving the B2 80CL as a daily and LOVING it!!!!

21-03-13, 10:12 PM	#3
Willbo Mr 80 quattro! Classic Audi Club Member Join Date: Nov 2008 Location: Carlisle Posts: 1,279	Straight through. Make those ears bleeeeeed __________________ VW Golf Tdi Porsche 924 Turbo (Brown) http://www.zolfe.com/Index.htm http://www.youtube.com/watch?v=vqzmc...eature=related

31-03-13, 09:54 AM	#5
quattrokid 4 ring whore! Classic Audi Club Member Join Date: Nov 2007 Location: Ayrshire Posts: 9,654	Just go straight through from the turbo back and exit via a DTM back box I did Sounded awesome __________________ RS4 B5 (wife's / ours now ) S3 8L Imola Yellow S3 8L Nogaro blue UrWR SOLD UrS4 saloon (SOLD again) S4 Cabrio (SOLD) A4 cabrio 2.5 V6tdi (SOLD) 80 cabrio 2.6 V6 SOLD 90 quattro 10v SOLD 100 2.2e SOLD FOUNDING MEMBER the 200,000 Plus miles Club

31-03-13, 04:44 PM	#8
quattrokid 4 ring whore! Classic Audi Club Member Join Date: Nov 2007 Location: Ayrshire Posts: 9,654	I had a Strumung turbo back 3" via a sports free flow cat then straight to a DTM back box Mine droned around town because it's an auto A few hundred revs more and it's in the sweet spot, give the beans and sounds like a V8... has been observed by Simmo up here. Now on a standard exhaust again. __________________ RS4 B5 (wife's / ours now ) S3 8L Imola Yellow S3 8L Nogaro blue UrWR SOLD UrS4 saloon (SOLD again) S4 Cabrio (SOLD) A4 cabrio 2.5 V6tdi (SOLD) 80 cabrio 2.6 V6 SOLD 90 quattro 10v SOLD 100 2.2e SOLD FOUNDING MEMBER the 200,000 Plus miles Club

31-03-13, 05:27 PM	#10
quattrokid 4 ring whore! Classic Audi Club Member Join Date: Nov 2007 Location: Ayrshire Posts: 9,654	No it's not too intrusive BUT it's bloody well addictive mate !! Get a sports cat in there, then remap it is yours auto? Canny remember off the top of my head. Stick in a better air filter as well __________________ RS4 B5 (wife's / ours now ) S3 8L Imola Yellow S3 8L Nogaro blue UrWR SOLD UrS4 saloon (SOLD again) S4 Cabrio (SOLD) A4 cabrio 2.5 V6tdi (SOLD) 80 cabrio 2.6 V6 SOLD 90 quattro 10v SOLD 100 2.2e SOLD FOUNDING MEMBER the 200,000 Plus miles Club

31-03-13, 09:26 AM	#4
86audicoupe Classic Audi Pervert! Classic Audi Club Member Join Date: Dec 2007 Location: Dorset Posts: 2,182	I've been quoted £150 to remove the middle box and weld in straight pipe. They are twins going front to rear and the company are going to make a new exhaust bracket to go on the straight section. Good price or rip off? Me and Dad would do it ourselves but don't have pipe or flaring equipment. Does anyone know how loud it will be with the middle box removed? Or should I get the back box removed instead?!

31-03-13, 12:46 PM	#7
spink Senior Member Classic Audi Club Member Join Date: Dec 2007 Location: yorkshire Posts: 1,525	I ran one of my previous s6s with just the downpipe and cats for a bit while i repaired the exhaust(had cracked round the joints on one of the boxes),sounded good and not too loud.Never went on a motorway with it though so can't say if it was annoying at those speeds If i were you I would get a single box stainless system made for it,saves a shit load of weight and sounds good. btw Richie(hoffer on s2forum) can make you a nice system and he is only a few miles from you

31-03-13, 05:16 PM	#9
86audicoupe Classic Audi Pervert! Classic Audi Club Member Join Date: Dec 2007 Location: Dorset Posts: 2,182	Thank you both for your replies! Perhaps it won't be ridiculously loud then! Spink, wherabouts is Richie based then?