NOT the N75 valve...

[S3 Paul]

As above... i know that people fit different N75 valves to their S3 with resulting higher boost/ agressive delivery but the other valve... N247? or whatever it is... are these all the same?

 

[S£]

Yep i believe so, it's on top of the engine under the cover, When i bought my S3 it was unplugged as it had a atmospheric DV on, you don't actually need it but i can't remember why? sure someone will fill you in on the rest of the details!