Welcome, beautiful car!
Thank you.
Welcome, onefasts6!
Hi S6 family 
… finally found my way “home” 
Have been looking for a forum with Audi S6 V10 knowledge for a while now and finally feel I found the right place.
Also I love your “mantra” … ask anything … we will answer even if the question has been asked before 
Side note:
I quite “dislike” when the omniscient (is that word correct? …often high ranking users) feel they have to draw the forum-police-badge … just because they have all the knowledge and feel they waste their time posting a solution more than once… don’t get me wrong, I have managed a forum for years and know how it is at times. I use the search function a lot myself so when I look for a solution to a problem I or someone else has and I get 30+ hits but only one post telling me what to do, I really have to hold back not to write my opinion about these specialists … because in fact THEY end up wasting everyone’s time and scaring off many newcomers! At the very least insert a link to the solution…
Sorry… had to get that off my chest in a place where people might even understand me 
Sorry:
English is not my native language, so you might get tired of reading my posts… with lack of vocabulary my writing tends to have higher word-count than LIX-value… so “pardon my French”
Who am I:
My name is… well my username tells it all… I have absolutely no imagination, so I always use my real name and since no-one else does, I’m always able to create it 
I’m from Denmark, where Kim in fact IS a male name, and as some of you perhaps know (or not?) the car taxes here are ridiculously high, so we tend to maintain our cars very well and drive them until they are “put down”
I have a (not too small) garage (or shop as you tend to call it here) of 46m2 (square meters, roughly 495 square feet) with a lot of tools, Industrial C02 welder and such. For milling and lathe jobs I have a very good friend who lets me use his machines when they are not occupied.
Garage ceiling is unfortunately too low for a lift but I consider getting some sort of QuickJack when I have the cash to spare … … 
… 
… 
… just realizing I bought an S6
Well for now I have to get by with my 2 ramps, 2 heavy duty hydraulic car jacks and jack stands… what I’m trying to say is… I’m not afraid to get my hands dirty and have done almost everything on my cars by myself.
My Audi (well, car) history:
I have owned several Audi’s… Audi 100 C3 1.8, Audi 100 C3 Avant 2.2, two Audi A4 B5 1.8t, Audi A6 C6 2.4 V6 and currently I have Audi Cabriolet 1991 2.3, Audi A3 2008 Sportback 1.4tsi (tfsi) and Audi S6 2006 5.2 V10 (specs further down).
In fact I have always been driving VAG cars. Several VW Scirocco I, a VW Beetle T1, VW Golf II GTI 16V, VW Passat 1.8 and V5 but I just LOVE Audi.
Shortly after I bought the S6 I sold the A6 at 540000km (roughly 335000miles). The new owner took it to his favorite mechanic (Audi specialist) who told he had never seen or tried a better example of the 2.4 V6 with even half the mileage
Before I bought the S6 I was on the lookout for about 6-8 months. Reading all info I could find (unfortunately not here) and finally asking in my absolute favorite Audi forum in DK http://audiclub.dk/ … (check it out).
I ended up trying a couple of cars (at the time there were only 3 for sale in all DK in my price range) and decided it should be…
The important stuff:
Well I guess you want some S6 info
My Audi S6 Avant Quattro 5.2 V10 was produced in late 2006 and came with carbon trim, rear parking camera, navigation, adaptive cruise control, door assistant (closing), xenon headlight, detachable tow neck, all black leather (not dash), BOSE sound system, coming-/leaving home light and a lot of other options. Color is IBISWEISS LY9C. The price tag at that time was about 2mill DKK (roughly 318000USD!!! yep… you see 6 figures!!!).
My main concerns were carbon buildup and transmission maintenance and secondary the interior. Mileage, paintjob and other wear parts were not so important as I could fix those (another buddy of mine is a car painter) so it would depend on the price.
The guy I bought it from did not strike me as if he even cared about high service costs. All services had always been done at well reputable shops (only some of them at AUDI) … as he said … if you have to consider cost of ownership, maybe you shouldn’t bye such a car. He imported the S6 from Germany in 2007 with demo-mileage
We negotiated the right price and I even got original 8jx18" Audi rims with next to unused Continental winter tires in 235/45/R18 with in the bargain. The S6 was mounted with 8.5jx19" rims with Dunlop Sport Maxx 265/35/ZR19.
I also got invoices from the last 2 years where all major things had been taken care of. In that time the S6 had only been driving approx… 5-6000km (roughly 3700 miles) of the almost 279000km (roughly 173000 miles) it had been doing all in all the day I bought it
Also the main reason he wanted to sell… never driving the beast anymore… he had a lot of other cars to choose from
Jobs done:
Most of it done right before I bought it.
- Brake pads and discs front and rear.
- 10 sparkplugs.
- Fuel filter.
- 10 fuel injectors.
- Lift pump in fuel tank.
- Both high pressure fuel pumps.
- Intake manifold (ATP).
- Carbon clean (I guess… well I hope!).
- Steering column.
- Battery.
- Suction pump (078133753A)?
All in all (some labor invoice missing) about $14K.
At some point he also got all 10 coils new. He couldn’t find the invoice, but I have no reason not to believe him.
Jobs to do:
- Engine mount (have it).
- Oil and all filters change.
- The 2 small flex pipes (done a redneck-delete for now… can’t find them anywhere!!).
- Perhaps transmission and diff. flush???
The original owner was quite sure the oil had been changed in the transmission a couple of times but had no evidence!
Wishlist:
- K&N filters (if possible cold air … box-delete???)
- After reading here… perhaps a JHM tune???
- JHM intake spacers???
- Perhaps new paintjob (same color).
- New front windshield (when doing paintjob).
- Perhaps new summer rims!
Notes:
I have already been driving approx… 12000km (roughly 7500miles) in 9 months. Mostly long journeys… German autobahn is GREAT … had it kissing 280km/h (almost 174m/h) at one point… but didn’t have the nerve to look at my GPS speed so I don’t know how fast that was IRL. Original owner mentioned that it was perhaps VMAX moded, but I’m unsure. Felt like it didn’t want to go faster (suddenly held back) although it could have (just a feeling).
One stretch of approx… 100km at night (low traffic density) our average speed was well over 220km/h (calculated)… that’s over 136m/h and the car did just great, no head problems and no “hickups”
When I got over 210 in my prior A6 C6 I had to concentrate as I do in the S6 at 280 LOL 
its just built for speed 
Every time I drive it my right foot somehow gets very heavy (after engine oil has reached operating temp. of course and) when the road and traffic allows it… not necessarily the pol… … Denmark is not Germany you know 
When I cold start, it revs higher, as is normal, and I never put it in drive before it goes below 800RPM because it hooks a bit hard. When transmission oil is warm(er) it shifts very soft.
I have never had any shifting issues at all unless I drive from cold when engine is revving higher.
I have had some funny engine errors but I think I will post that in the Info Dump thread.
Have 12 more pictures I wanted to show you (not allowed) … just love that car 
Thanks for having me (sorry for the long text)
Welcome. This is the forum for people who love cars and don’t have egos. I too hate the concept of telling someone to search for an asnwer. If you want to drop a link I think that can be nice of members. But when you think about it some people say search. Well who knows what data someone will find when they search. Perhaps there are more than one posts. Either way. Welcome. Ask away and after a few posts you should be able to load up your pictures for all to see.
You really lucked out. Parts wise it looks like the car was well taken care of and in most cases you get people who sell the cars right as they get into the “needs work” stage.
So performance wise. K&N is a win. OPEN air or box delete is a complete waste of time and ends up hurting the car not helping.
Performance wise ECU and TCU… JHM hands down by far no one is even close.
Lots of good videos but everyone you talk to will tell you JHM is deeply committed to the platform. The intake spacers are a second great support thing to get. — https://www.youtube.com/watch?v=4rm0sk58B5U
Excellent car! Welcome!!!
Hey guys! I bought my 2008 S6 back in October of 2019 and haven’t looked back. She goes off to the shop in May for a custom exhaust then who knows lol.
Looking forward to gettin to know some of y’all and all the info on this forum.
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Hey! Nice car! Welcome!
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Make sure to request an x pipe in place of the “h”. This will make it sound awesome
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I’m doing high flow catalytic converters to a x-pipe back to magnaflow bullet mufflers.
Are you going to drop the motor to do this?
Unfortunately yes but the shop that is going to do the work said that they might be able to make it work without dropping the whole engine.
Depending on the mileage of your car, you may want to consider replacing O2 sensors and some other “while you are there” items.
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O2 sensors are on the agenda. Started throwing that code last week so going to get those done.
Just for “fun”, I repainted my wheels. They were looking very sad after 14y of parking and curb rash…
Picked up a grey 2008 S6 sedan a few months ago, just over 200,000km’s on the clock, originally an American car but imported to Canada several years ago currently located in Calgary. Only modifications are a slightly larger exhaust done by the previous owner, it seems to be a custom job so I doubt it makes much of a performance difference but it does sound nice. Not really planning on doing much in terms of performance upgrades save for a possible transmission and engine tune. I’m working my way through the maintenance issues right now (trying do the front suspension right now, stuck on the axle bolt and pinch bolts currently) I’ve had the intake cleaned and the valve cover gaskets done
Planning on finishing this suspension, getting the oil pan gasket done and trying to fix the adaptive light on the front right as it’s seems to have failed. I’d like to upgrade the sound system to allow music streaming, I’ve watched a few videos on how to do it, but haven’t gotten around to it yet. Looking forward to spending some time here
Good luck
The JHM engine and TCU tune really wake the car up especially if you already have an exhaust.