Help With A Vacuum Hose On New Air Intake Piping

[Nick378]

i'm about to install a t3-t4 turbo on my rb25det and i just saw that vacuum hose wich i really dont know what to do with!

It's the hose that start there, on the air intake oem piping

and goes there, on my bov.

Do i have to keep it on the custom aluminium intake piping? if so, i only have to drill and put a nozzle on the piping i guess. If not, the oem bov will work without that hose?

Thx!

[M E S O G L E A]

This small line/hose or the recirc piping?

[Nick378]

i think its the recirc of the bov

[TiTAN]

you will need to plumb that into the new intake pipe.

[turbo_brian]

Comes of the BOV (the round thing at the top in the middle of the 2nd picture. Best to circulate this back into your intake (before turbo), as this is where it goes currently.

B.

[gotRICE?]

Im pretty sure you need to have the BOV return modified to fit the alloy intake pipe.

No offence, but they are rubbish for what you pay, and have to do to make it fit.

If your running atmo venting bov then they are fine, but you arent so it might be more hassle than its worth!

The BOV will still work, but if your running an AFM, then you might have stalling issues.

[Mr.Massive]

You dont really need to recirculate it, everybody has their own opinion about this. I know a couple of mates that have blocked off the bov return and havn't had any hassles.

[gotRICE?]

Holy 9 months batman.

Theres a difference between blocking the bov return and running a straight atmo bov.

Blocked, the air isnt released. It just tututu'ts. Not sure wether it causes stall issues or not.

Atmo, its released. And that causes the problems as the AFM has no idea its gone. Causing the stalling.

No point arguing the facts.