The blow off adapter:
Forge Blow Off Adaptor for VAG FSiT TFSi Turbo Engines - A3 (8P) - Audi - Shop By Car
The blow off valve kit:
Forge Blow Off Valve kit for 1.4TSI/1.8TSI/2.0TFSI Engines - A3 (8P) - Audi - Shop By Car
can anyone thats got either of these or just knows about them tell me the difference between the two?
as far as I know they both provide the dump valve 'psssshh' lol which is all I'm after really, so is there a decent reason why I should fork out the extra and get the valve kit?