Cat back warranty?

[SmokeyRS6]

Tell me to FON but have had a search and can't anything

Does a cat back exhaust void the warranty? Just my local Audi centre were very twitchy when I took it in over the wheel bearings and the first question was "it is modded?". Which tbh I thought was an odd opening line!

I'm really looking at a decat as I don't really want it to get to drowny on the motorway!

Cheers in advance

[Trups]

Mine was fine with an exhaust.

They even told me that it had previously been detected with a Map as there was a note on file.

Trups

[andy]

Mine sold me the car with the Milltek cat back system fitted! Also supplied the 1 year Audi warranty plus covered it with another 3 years of their own. Should not cause any problems and if it does, use another dealer.