What does a BOV do?
Senior Member
Joined: 04-03-2008
Posts: 1,434
From: A state of L N F Performance
The Turbo Cobalt already has BOVs for it?
Also you don't hear bypass valves because they don't release into the outside air, the recirculate the air back through the system, most any VW or Audi has BVs on them. My twin turbo S4 and a nice set of diverter valves and they make no sound.
Also you don't hear bypass valves because they don't release into the outside air, the recirculate the air back through the system, most any VW or Audi has BVs on them. My twin turbo S4 and a nice set of diverter valves and they make no sound.
Thread Starter
Senior Member
Joined: 08-06-2008
Posts: 1,761
From: Grand Haven, MI
The Turbo Cobalt already has BOVs for it?
Also you don't hear bypass valves because they don't release into the outside air, the recirculate the air back through the system, most any VW or Audi has BVs on them. My twin turbo S4 and a nice set of diverter valves and they make no sound.
Also you don't hear bypass valves because they don't release into the outside air, the recirculate the air back through the system, most any VW or Audi has BVs on them. My twin turbo S4 and a nice set of diverter valves and they make no sound.
Isn't that more desirable (bypass valve) for performance? I don't care about the sound, but it sounds like some want to add a BOV just for the sound
Senior Member
Joined: 04-03-2008
Posts: 1,434
From: A state of L N F Performance
It is for closed turbo systems like on Audis and VW's unless you are making major power. A lot of times on stock or lightly modded Audis BOV's can cause problems, but they can also work just fine.
Thread Starter
Senior Member
Joined: 08-06-2008
Posts: 1,761
From: Grand Haven, MI
I get that, I was wondering if the CBV (closed loop) was a better choice than a BOV (vents to outside), and why we never hear about the CBV.
The link that XXL supplied (BOV 101) explained that venting to the outside can cause problems with the ECU. Both work to save the turbo, but the CBV sounds like a better alternative?
The link that XXL supplied (BOV 101) explained that venting to the outside can cause problems with the ECU. Both work to save the turbo, but the CBV sounds like a better alternative?
Senior Member
Joined: 04-03-2008
Posts: 1,434
From: A state of L N F Performance
I get that, I was wondering if the CBV (closed loop) was a better choice than a BOV (vents to outside), and why we never hear about the CBV.
The link that XXL supplied (BOV 101) explained that venting to the outside can cause problems with the ECU. Both work to save the turbo, but the CBV sounds like a better alternative?
The link that XXL supplied (BOV 101) explained that venting to the outside can cause problems with the ECU. Both work to save the turbo, but the CBV sounds like a better alternative?
