I managed to replace all the lines from the purge valve to both the intake manifold and the air pipe using fuel line hoses. I used 3/8" from the purge valve to the tee and from the tee to the both check valves, and 11/32" from one of the check valve to the air pipe. I don't recall what siz...

Oh hey. All the lengths you'll need! For a turbo anyway. http://volvospeed.com/vs_forum/index.php/topic/13180-the-silicone-hose-how-to/ I just ordered 8 feet of 4 mm and 3 feet of 3.5 mm from Hose Techniques. Not the kit. I still suspect the hose from intake manifold to turbo is 3.5 mm. I asked the...