Brake booster hose
 

When i removed my stock 2g intake manifold i had to sorta wreck the the very end of the brake booster hose that attaches to it in order to get it off. It was tight on there. It's a hose that goes from the brake booster to the intake.

On another site, i read an install how-to for putting the Magnus on. It said not too cut too far into that hose because there is a one-way check valve in there. Does anyone know how far into the hose the check valve is at? I squeezed it, stuck something in it and can't feel anything inside the hose.

I have to trim some of the hose off so that's why i'm asking. I'm done search on different key words but came up with nothing.

Thanks!