How to install a BOV in Subaru TT

[Joker]

sheet I am confused

[Nick_96_RSB]

this is the pic i refer to, the pipe coming off the recirc what size is the hose, and where can i get the joiner you have on the end of it?

i just want to get all the bits ill need before asking someone to help me with putting it in

maybe ill just pay someone to sort it all out for me, probably easier that way

[Joker]

I think i cut that of another cars heater hose yep you need something similar to recirc back into intake

[Nick_96_RSB]

cool, and the vac hose that goes on the nipple at the top of BOV where does that run back to on the mani? & should 1M of hose do the trick? was looking at hose on tardme, just not sure what size to buy, 4mm, 6mm 8mm?

[Joker]

used the stock BOV hose, could do with begin a tad longer iirc

[Jord]

 CIutch Nade']

[quote name='G-unit said:

yup u only change the passanger side, and it works for both turbos

/quote]

Cant be true,. i owned a GTB and replaced the passenger one but only worked on the primary turbo Very Very quiet on the 2nd turbo, tried 2 diff bovs too, so i gave up and bought a WRX lol =) im sure some1 will enlighten me though

The twin turbo still only has 1 BOV. If you think about the BOV's purpose is to release the pressure in the intercooler, in which both turbos are connected. The only reason you would need a BOV for each turbo was if the turbos had completely separate intakes with their own throttle valves.

The other valve is used when the secondary is spooling,nothing to do with the throttle closing (its controlled by the BBOD)

[Joker]

early TT's did indeed have 2x bov : then they figured the above princible that only one was working or something like that

[Jord]

No I'm certain they don't. Are you sure your not confusing it with wastegates? The BG5A twin turbos had twin wastegates that were ditched when the facelift model came out.

[Joker]

could be I've only ever owned 1x Twin Turbo : and never really worked on any

Your explanation sounds right/what I was thinking of

[Nick_96_RSB]

ok so im ALMOST there, went out to Pick A Part, got a small piece of heater hose ( and some interior trim clips that were missing from my doors), ordered some 20mm adaptors from Pro-Wholesale & have them in my grubby little hands, also picked up 2 x hose clamps & a piece of Vac hose from Repco the other day, just need to find a piece of pipe (i think) to connect the plumb back pipe as per Jokers photo

am pretty sure i see what i need to do, but will probably ask someone local to give me a hand