i am getting a bov for my 87 t2 which is runnin 11 psi and i was wondering if i should vent it or run it back into the intake? i would like to vent it but is there any draw backs to venting it into the atmosphere? thanks

 

Dumping metered air to the atmosphere can cause a momentary rich condition. *shrug* I'm not a turbo guy, so I can't say how much that actually affects things.

-=Russ=-

 

If you don't want people to hear it then route it back into the intake. Thats about the only reason i can think of not venting it. I had a long thread about this on Teamfc3s.org, you might wanna check it out.

 

i vented and threw a cel up. it just makes it run really really rich in between shifts unless you have someway of tuning that out i would not do it. it does sound really badass but i would rather save a motor than have something like that. .02

 

Open vent=attention *****
recirculate=not attention *****

You might want to run two re-circulating valves if you stick with that type because I think i heard the stock ones start running out of steam around them parts.

 

Well then I guess I'm an attention *****. Mine is open vented, I have no problems...well except for the side effect of generating massive flames during shifts.

-Joe

 

i get loud pops when after i vent, but i thought the injectors turn off on deceleration.

 

recirculate if you can, but its not necissary.

 

You are correct, but the injectors are not cut until the TPS tells the ECU the throttle is completely closed. If the revs are high enough (i.e. just before a shift) it's possible to create enough vacuum with a partially-open throttle to open the BOV. In the short period of time between the BOV opening and the injectors being cut, fuel is still being injected but the air metered for that fuel has been vented. Most of that fuel passes though the engine unburnt due to the lack of oxygen. It is heated by its passage through the engine and exhaust, and when it hits the oxygen-filled air at the tailpipe(s) it ignites, hence the pops and flames.

 

from what i have heard if you recirculate the HKS ssqu you can still hear it. Not as loud but you can still be a ***** haha and not become pigrich durring shifts. Let me know if that is true, I have only read about that

 

becoming pig rich(lol) cant hurt the engine can it? its only for a brief moment.