Anything will be better than the sh!tty blow off valve he had on before 
defo mate!!! haha, i can hear a chattering noise now which is due to airbox been drilled which couldnt hear before sounds good!

haha, it seems good so far. and since running it i think the old dump valve must have been leaking boost or somthing as the boost gauge would move around all over place while climbing upto 5k now it seems alot better.