VentsiBeast

I've been searching for a good exhaust system and I'd like you guys to help me build a list of all there is on the market, EU or USA.
Here's what I've found so far:

MTM - 4133 euro
MTM exhaust system Audi S8 4,0L Q 4-pipe with throttle valves in 2 pipes - Audi S8 D4 (4,0 TFSI 382kW (520hp) Quattro)

Abt - unknown price, approx. 4000 euro
Exhaust technology

Milltek - 3300 to 3900 euro
Audi S8 4.0 TFSI quattro Tiptronic Milltek exhaust

Supersprint - various prices
AUDI A8 S8 QUATTRO 4.0 TFSI V8 (520 Hp) 2012 ->, AUDI A8 S8 QUATTRO D4 Typ 4H 2012 ->, Audi S / RS, exhaust systems

Meisterschaft - $3000-3500
GTHAUS - Meisterschaft Performance Exhaust Systems ::: ver 3.0
GTHAUS - Meisterschaft Performance Exhaust Systems ::: ver 3.0

Mariani - unknown price
Audi S8 Sportauspuffanlage | Mariani exklusives Tuning

audisession

Looking to upgrade my exhuast.
Has anyone done it? if so any videos to share?

Stevereddy

While it is true you can buy one of the fore mentioned systems I have chosen to build my own. I have a 2014 A8 4.0tt. I have never liked the exhaust openings in the rear apron and have bought all the parts for the S8 rear apron from audipartsusa.com. The lower bumper cover, diffuser and trim strip were 797.00 delivered. I paid 200.00 to have the parts painted the same black as my car.
I will be installing the body parts over the next couple of weeks, I plan on removing the rear mufflers and replacing with a Flowmaster 3” in-3” out polished stainless steel mufflers with a dual black angled tip from Redtail exhausts. I will be doing photos as I go. My reason for doing so is looks and a little increased sound as I find the A8 to be too quiet for my tastes. I will be selling all the factory take off stuff in case someone wants to convert their car to the trapezoidal tailpipe look.
Exhaust work doesn’t need to cost 3-4 thousand dollars, common sense, good welding and quality components are what is needed.