#16 Vac Hose

[Rome]

Just noticed the number 16 vac hose Hose has been Blocked off with a screw and the Thing that its suppose to go to (not sure what its called) has been blocked off

anyone knows what this is Doing/restricting?

[Guest loren]

not sure anyone will know which hose is #16.

[dumbskate]

which end is still attached?

[Rome]

 dumbskate said:

which end is still attached?

at the bbod

[dumbskate]

Right.

The other end should be attached to the forward of two small nipples that come off the side of the large plastic T that is directly above the secondary turbo BOV. The nipple towards the front of the engine is for line 16 while the one just behind it is for line 22 which runs to the pressure sensor solenoid. The nipples are plastic and have a thin outer wall that secure the hoses in place.

[Rome]

yeah the 16 hose should go into the same thing that the 22 hose is coming out of witch is the pressure solenoid?

any idea why the previous owner would of done this?

[Durty-Sanchez]

#22 feeds one side of the differential pressure sensor, which lets the ECU know when to open ICV.

#16 feeds from the same place, and if memory serves me right it acts as a pressure source either for the secondary wastegate or something else. The secondary wastegate isn't used on early models, so the line is fairly redundant. He blocked one side to keep the DPS happy, and possibly the other just to seal it all up. If I can find my TT diagram somewhere I could tell you for certain!

[dumbskate]

The large T above the BOV should have 16 running to the BBOD and 22 running to the pressure sensor.

Chances are someone found it loose, figured the car was running fine without and and just blocked it up. It would have caused a small vac leak at the big T end.

This will give you the idea.

[Rome]

 dumbskate said:

The large T above the BOV should have 16 running to the BBOD and 22 running to the pressure sensor.

Chances are someone found it loose, figured the car was running fine without and and just blocked it up. It would have caused a small vac leak at the big T end.

This will give you the idea.

yeah that's the one

cars been running pretty sweet apart from it playing up lately only boosting 5psi and second turbo not kicking due to an exhaust leak?

should i leave those hoses as it is or reconnected how it should be?

[dumbskate]

if the car is stock and your having issues I would personally return it to stock before trying to fix anything else. That is of course unless you know the previous owner/person who blocked the lines.

[Rome]

yeah don't know him

well the hose is suppose to go there for a reason so it will only hopefully get better

cheers for all the help man appreciate it