I see that neuspeed, APR, and samco all offer turbo inlet hoses for the B6 A4. Does anyone use a turbo inlet hose? if so, is the hp/tq gain noticable?

 

its gonna be a little more noticeable but nothing major. Why it is important to have a this inlet hose like that is 1 for heat soak and 2 under full boost your stock inlet hose will collapse a little hurting throttle a little bit. It shouldn't be that big of a deal though with a k03 or k04 if you went with a garrett tha might be a different story.

 

I run the APR one, Forge also makes one and it seems bigger than the other ones.