tial bov problem

[tinys s14]

I think I need a stronger spring in my bov. It has a 9 psi spring.. should I get a 11 or 12 psi spring

YouTube - tial bov trouble (http://www.youtube.com/watch?v=hcyuI_bC4AU)

[sliptones629]

what is your vac @ idle. will tell you which you need. My car however isnt running just yet, so I ordered mine with a 10psi spring.

[tinys s14]

i dont hav a vac gauge so how else you check.. i belive a sr should be at
-20 at idle?

[slideways2004]

you dont have a boost/vac gauge?

also, that doesnt look like a 9lb spring. The bov is opening pretty early. Mine didnt open until 4k if you are free revving it

[tinys s14]

so should I get a 11 or 12 psi spring.. also does it matter the bov is close to the throttle body?

[SoSideways]

so should I get a 11 or 12 psi spring.. also does it matter the bov is close to the throttle body?

What does Tial recommend for 20inHg of vacuum at idle?

LOOK IT UP!!!

[Corbic]

so should I get a 11 or 12 psi spring.. also does it matter the bov is close to the throttle body?

There is more pressure Turbo -> IC then IC -> Throttle Body.

A BOV closer to the TB is a better setup, but the Sound is louder closer to the turbo.

To Rice or Not to Rice, that is the question.

[S14DB]

http://www.tialmedia.com/documents/w3_tial_bov50_sp.pdf

[derass]

i am also having trouble with my tial bov,i have it installed on the cold pipe with a -11 psi spring (unpainted) my engine pulls 20 inhg. with the tial my car surges terribly and doesnt seem to blow off at full load.

i have seen posts talking about the valve being pulled open at idle and the vid you posted is a perfect example. i would try shimming your current spring with washers before purchasing the 11 psi spring..

ill be purchasing the 7 psi and 9 psi springs to try and sort out my surging issue

[Kouki_monstr]

I dont want to open a new thread since i found this one. Just to make sure, I have a stock red top SR with stock maf and t25, am i going to be at 20 inhg? Just making sure cuz i just ordered my pdm hmic set up and im getting a tial Q from my girl for christmas and i need to tell her what spring to get. thanks!

OP- did you ever fix this issue?

[smelly240]

you will be at 18-22 vac

get the bigger one

[Kouki_monstr]

What do you mean get the bigger one? So obviously the "unpainted spring"?