Irish 07 S6 maint/upgrade thread

Probably a good idea to keep all th updates and fixes in one thread for my car. SO i have the car since Nov 2015, picked it up from a work colleague with 61500 miles.

Since i have it has gotten the following:
Oil and filter changes
Passenger side front door lock
Thermostat housing seal replaced and coolant replaced
New K&N filters
Cleaned MAF’s.
full led rear lights
Rear window tints
Re-fitted milltek resonators

I had it on the local dyno for the fun of it and she made 352@flywheel. It was running on 95 ron, where these EU models should be on 98 ron, so it was obviously pulling power a bit. I have been using 100ml of NF Octane booster the last few months and it helps a lot

So whats next on the list of maintenance(currently at 67k~):
Carbon build up check/clean if needed(last checked at 48k, 2013)
Intake manifold spacers
New rears rotors and pads
Inspect front suspension bushings etc
Spark plug change?(last done 48k, 2013)
Wheel refurbish
New tires
Fuel filter change
Remove Milltek resonators

One small issue this car had with previous owner was intermittent o2 sensor fault, which i believe requires engine out to replace this sensor, so he had the post cat 02 system mapped out. Has anybody had similar done? Do some of the o2 sensors require engine out to change?

I think there is two of these cars on this small emerald isle so its hard to find any shops that have much experience working on the v10 which doesnt help matters. Audi dealers wanted 560 euro for an expert service alone! I did it myself since for about 1/5 of that price.

I also still have some noisey compressor/aircon sound still that appears to be very random.

Ill pull some updated vcds codes soon and see how its looking. Anything else i should be looking at on this kind of mileage?