Ok here is the car and mods, don't think any of it will matter but.....

98 Civic
boosted b18b1
forged internals
t3/t4 turbo
660cc
255 lph
tuned on chrome @ 11psi

When I get on it, in higher RPM's under boost, my radiator hose starts to collapse and it forces coolant out from the rim of my radiator cap. My cap is brand new and is 16 lb cap. I was wondering if there was any way of fixing this, other than the metal hoses ($122 @ summit). If it matters it's a 1/2 sized radiator.