Is there any method to cleaning ceramic coated headers? I have a DC that's in need of some TLC, but not really sure where to start. Following this thread...

https://honda-tech.com/zerothread?id=852379

would something similar to that work? I don't imagine that sandpaper would be a good idea, nor would something such as steel wool. Also, I don't think that something such as a SOS pad would suffice either.

So, any ideas for gettin this bitch clean?

Thanks.