Quote Originally Posted by elRey View Post
Since the 3.0 line still requires a hose from engine end of hard line to rail (not 100% solution from filter to rail), has anyone tried a B5 line or passat line? Are they the correct lengths from filter to bay? They also have the added benefit of routing the bay portions further away from turbo. So, may be even use the feed line aswell.

Thoughts?
They don't fit. Why is it not 100% solution from filter to rail? Go to the hardware store and get a couple feet of 5/16" fuel hose and some clamps. Looks OEM

Quote Originally Posted by vtraudt View Post
Who has completed a E85 return style conversion to the B6 A4 1.8T?
How?
Maybe schematic?
Of particular interest: how are both halfs of the tank kept full? Stock is using a syphon system with. Filter return goes to one side of the tank, suction Y pumps fuel to other side of tank.
Simply running the (new) return line to the existing (right from filter) IMO does not work well, since return line has flow reduction orifice (causing way too high return flow back pressure). Eliminating the reduction kills the 'suction' effect (and only 2 side of the tank is filled).

Looking for simplest working solution.
Have you measured the pressure at the return line? I never had issues with mine.