I have an S4 but recently bought a used S5 turbo. Bolted everything up, and I noticed there was a vacuum hose sticking out that wasn't on my old turbo. I was just wondering if anyone knew what I am supposed to do with that line, because the FSM for an S5 says that it hooks up to a solenoid or something near the oil filler, but I removed emissions. Can someone help me out here?

 

I believe thats for the boost noid on the s5.

 

Boost control solenoid line. Cap it or use it for a bleed-type boost controller.