V8A6, did you ever end up adding the RS6 side skirts? I’m interested to see what they look like on the S6.
Sorry, never got around to having them installed. Same for the RS6 front bumper.
Will see what happens. I working to finish everything off, and the bumper and side skirts were part of that. If I decide to skip, Ill post for sale as a package. Along with the front bumper I ordered a Euro impact beam and supports, as the front NA one didnt line up.
Once done and complete, and tuned I don’t think you will want to sell 
Are there any videos of V8a6’s car in action or any sound clips or dynos? Id really like to know how much HP he gained off of them giant headers he built. id love to have a set of them too are they still for sale? can they still be made?
Headers alone is probably 30-50 whp. Stock headers and cats suck. 600 cel and right by the motor. You’d have to pm countvohn if you want headers. Look up nordys build he’s done pretty much all the powertrain mods sans supercharger. Headers or at least gutting cats and tuning appropriately is worth it if you have done all the other JHM mods.
All the same parts as V8A6’s car, built by the same guy.
http://audirevolution.net/videos/198/audi-v10-s6-w-headers-and-catback
Headers help make good power but you also need the same tune to pull out the power. Recent results have shown that the JHM CV headers really work and you can’t just try to make headers just standard longer pipes looking like headers don’t make the same power as the ones these guys had made by CV
The CV headers are the best!!
After a lot of extensive googlin’ I see that you’re (one of the few) the only person talking about putting the RS6 (reletevly affordable for brembo upgrade!!) calipers/rots on the S6. Q: Do any c7 stock calipers fit our c6s’ yet?!
So you confirm that you definitely “good practice” needed the larger master cylinder to account for the larger front pot capacity? When I did the 18zs on the C5, I calculated only about ~7% more MS would be needed, so kept it stock. I read your build prior to my purchase fyi ha… A script for what I would love to do!
Did you do the rears RS rotors and carrier also?
I’m curious to hear if you enjoy the monoblocks up front, was worth the upgrade vs the 385s (not sure if you track your car or not… cost of s6 brake parts vs rs…
Great build man!!!
Those are some good questions. I’m not too sure if V8A6 still has his S6. Last time he checked in on here, he was keen on selling it.
re: RS6 calipers and rotors, Honestly, I’ve never felt I’ve needed more braking power and from reports of the guys that’ve done extensive HPDE sessions in the S6, nowhere has anyone mentioned brake fade. The rotors themselves are .5" in diameter larger and the friction ring isn’t Steel meaning they’re WAY more expensive to replace with arguably shorter lifespans than steel. I’ve seem some front rotors for sale that had heat cycle cracks all over them - nope.
I hate to sound like a continual fanboi, but honestly the JHM lightweight rotors are about as good as you’ll ever need for an S6. I think they’re even a few pounds lighter per corner than the RS6 units as well. Replacement friction rings are exponentially cheaper than the RS6 units (that you’ll have to wait quite a while to import from EU to arrive).
Q7 swap is an interesting proposition that might make sense - 6piston calipers vs. 4, but I’ve never seen a definitive answer.
i’ve done some research on this. The C7 S6 calipers are on 400mm Rotors, and the offset is different on the caliper. I just had some used rotor from the C7 to see how they lined up.
Another option I stumbled on was the C6 A6 Brembo GT kit. That gets a 380mm rotors and is bolt on. (PRICEY OPTION HOWEVER)
I was toiling with the idea of changing my brakes because I hate the look of the stockers. I did swap Q7 18z on my B6 S4 previously on the stock 345mm rotors with no issue. Its just not that easy on our cars.
I’d like to look at swapping the stock C7 A6 calipers, they look much better.
I actually never got around to installing the 4F RS6 calipers. I used to have an old RS6 rotor, but Im not sure where it is now. If I were to look into it now, I would probably mount up the RS6 calipers with the stock S6 rotors, and see if the offset worked. There was only 5mm total diameter difference in the rotor (385mm vs 390) so the calipers should be able to accomodate the S6 rotors, if the offset matched.
If not, I would look around to see if any other rotors worked. There were some 400mm wave rotors that looked like they might work. Or, go custom.
I had the brake booster and master cylinder from a 4F RS6 at one point. It is at my friends shop, so should still have it.
The RS6 calipers are essentially the same design as the Brembo GT 6pots, btw. The Audi Brembo RS6 calipers have a bolt on brace accross the top, as opposed to the GT calipers that have the integrated.
If anyone wants the RS6 calipers, they are for sale. PM me if interested.
Just got the car back from tuning, and it is running INCREDIBLE !!!
Hope to get an update on the project thread up soon
Stay tuned 
Yes I was still curious about this!! Wondered how it ever panned out for you. And if you truly thought the MC was necessary for this upgrade. This would be one of them later retrofits I would take the plunge on however
I think it would nice to do the rear caliper carrier for the larger rs6 rotor. Doubt those rotors are cheap tho ha…
Interested in tuning feedback!!
Great to hear you have the car back up and running!
Glad to hear.
hey everyone…the S6 will be up for sale soon
It is running incredible, and pulls like a freight train
Ill have more details soon
Located in Toronto Canada
Car is up for sale…
one last exhaust video 
glorious sound