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You may want to pull the pads out and see if you see anything unusual with the pads surface. While there out you can compress the pistons one at a time and see if they all compress with approximately...

https://forum.rs246.com/viewtopic.php?f=2&t=143518

I think if all fails you may be able to get them from Germany at Audi Tradition. Surprisingly some of the prices aren't outrageous. It is crap that there are quite a few RS6 parts Audi has quit...

Do a search of the 4.0t engine issues. You'll find a few issues to keep up on but the basic 4.0t motor has shown to be strong and the RS6/RS7/S8+ versions have even stronger internals to handle the...

Yep, that's it.
https://audi.7zap.com/en/usa/audi+rs6+qu/rs6/2004-290/9/941-941025/

https://www.copart.com/lot/53509542/salvage-2003-audi-rs6-nm-albuquerque
https://www.iaai.com/VehicleDetail/34708087~US...

https://www.fcpeuro.com/products/audi-vw-a-c-compressor-4b0260805b-1
They come with compressor oil already loaded and capped off ready for install. I don't need one but I'm a parts hoarder so I just...

It is true, I was skeptical and went on and off the Aces IV a couple of times. I never really noticed an MPG improvement but what I should do (I'm back on it for now) is do some full throttle runs...

Thought I’d post this, you can see the mileage, I usually try to keep it below a 7k oil change but got side tracked, work, too many vehicles. I use this specialty oil (Quantum Blue 7.5w-40 custom...

https://www.moddedeuros.com/brands/shw-performance

I just mean the maintenance history from the previous owner(s) or Audi. I know JH Motorsports makes an improved kit for the strainers.

Did 13's still have issues with the Turbos? There is a TSB but I don't have it on which years for the 4.0t, check Mx records.

I'm nervous about Ebay items like that, they're guaranteed to be Chinese. The USP ones maybe too but at least USP is a more reputable seller.

https://www.uspmotorsports.com/USP-Titanium-Ball-Seat-Wheel-Bolt-Set-27mm.html
Yes, I'm anal and like the Titanium lug bolts, another way to shed a couple of pounds along with Forged wheels. OEM...

Yea, a very interesting history. 4 owners, regular Mx it appears, nothing major, timing belt replaced twice so far, due for a 3rd timing belt replacement unless I missed it. Couldn't find it listed...

Updated stereo and can't remember the name of this intake, I don't think it's the Apikol intake (mayhe an earlier version) but another one almost like it.....does it have an updated stereo. Front...

Exactly what Nubcake said. DRC is completely mechanical system, no electrical hookups for any of it. As he said, check the Reservoir first, check the codes, double check the parking brake lever is...

The Coolant line on the right side is definitely metal and not too flexible.

Mbagge01, he's talking about where that rear coolant pipe curves around the back of the engine and comes up the right side of the valve cover. I can't remember if you can pivot the valve cover up and...

FYI for those looking into it, I believe N.America only received the later style Radiators. At least looking through the parts catalogs and the 5 or 6 RS6's I've worked on have all had the later...

Yep
4B3 941 191 trim left
4B3 941 192 trim right
You may choke when you see the price though.

I don't think you can get at it from underneath, maybe with a 6spd conversion. What you might do is lower the whole subframe. I'd loosen the front bolts about 1/2" and then drop the rear bolts maybe...

No that I think about it all 4 of mine were Allen bolts.

Maybe a ball socket Allen so you can still get in there at a slight angle, I'm assuming the one you are having a problem with is the inner bolt.

It's a simple process. Both the High & Low ports are easy to get at. Good thing you're across the border, WA state Gestapo just made R-134a unavailable to DIY'ers. Only qualified HVAC techs can...