My car have 550 hp and I would like to know if i have to keep the bov close or full open? actually i have the bov full open. I am running 1.3 bar.

 

have a ap blow off and the spring that came stock was way to weak.. had to replace it as it released way to soon .if you notice your boost climbing extreamly fast your bvo spring is to weak, anyway thats how mine worked... replaced the spring and it works great

 

The bov is almost new, I dont think that bov have any problem, that i want to know is how to know when the bov is set it up for full recirculation like a stock valve or full 100% atmospheric for high power cars,

when I have full open the spring of bov is set it up for atmospheric or stock valve?

thanks

 

Thats not how it works. Its 50/50 either way. The **** in the back simply adjusts the resistance. If you want it to be full recirculation, you need to close the open hole.

 

am told that 50/50 is the way to go seems to work great for me.... if you hear the foosh almost evertime you shift i'd think about the other spring

 

Thanks Nola Got it!!!!!!