Thanks to all for nice comments again, I didn't post pics for this purpose, I just figured you may be curious to see what one looks like in this weird colour, but thanks anyway!
Mev - the exhaust is noisier than standard but the standard one is pretty much silent especially at idle but the Milltek burbles. I personally have a low threshold for boomy exhausts but this one is just the right balance, tuneful, not too boomy and quiet when cruising and it adds 8 bhp!
I think it is simply a cat back system.
Norrs2 - looks great, I remember a Santorini one was for sale back in the summer for £26k, was it yours? For some reason I thought it was called Azure Blue?!
Jarv, attached is a pic of my data sticker from spare wheel, I have blanked out the VIN (call me paranoid) but as you can see there is no paint code (usually L***/L*** on an Audi), alas 'NOS' doesn't mean what you think
BTW on removing tool kit I looked at my tyre repair fluid and the best before date was in 2003! Thankfully I had just acquired a Continental replacement with a date of 2011!
Nige, it doesn't appear to touch anything when hot but thanks for the tip. Here's a nice pic of two Milltek RS4's at Quarry Corner, Castle Combe.
http://www.volkswizard.co.uk/images/mai ... olours.jpg