I just posted this on the B8 S4 thread on Pistonheads as a few on there were grumbling about how hard it was to get the exhaust tips cleaned up of all the carbon buildup, thought it might be useful here too
I got my two different 10 packs of Dremel type brass brushes through yesterday (about £3 per pack from eBay) so thought I'd have a go at the exhaust tips tonight. I'm pleased with the end result, took less than an hour to do both sides. They aren't absolutely perfect mostly because you can't get between the two tips with the size of brush I bought but they look 100x better now and good enough for now until I get some smaller brushes and have a go at the middle bits. Here's a couple of before and after shots from one side...
I bought a 10 pack of each of these, destroyed about 8 of the flat brushes and 4 of the cup brushes in the process
Certainly beats doing it with wire wool etc, which didn't seem to budge mine at all.
I got my two different 10 packs of Dremel type brass brushes through yesterday (about £3 per pack from eBay) so thought I'd have a go at the exhaust tips tonight. I'm pleased with the end result, took less than an hour to do both sides. They aren't absolutely perfect mostly because you can't get between the two tips with the size of brush I bought but they look 100x better now and good enough for now until I get some smaller brushes and have a go at the middle bits. Here's a couple of before and after shots from one side...
I bought a 10 pack of each of these, destroyed about 8 of the flat brushes and 4 of the cup brushes in the process
Certainly beats doing it with wire wool etc, which didn't seem to budge mine at all.