Tial Q 50mm BOV help!
Check the line going from the manifold to the top of the valve and make sure there are no leaks or cracks in it. It sounds like you have some kind of leak in the line, and when you hit enough boost, it is popping open the valve.
Check the line going from the manifold to the top of the valve and make sure there are no leaks or cracks in it. It sounds like you have some kind of leak in the line, and when you hit enough boost, it is popping open the valve.







