hi , my turbo or blow-valve(dont know which one) sounded 'ssssshhhhh' just like shower when i was over 0.3 bar boost. Beside that i dont hear my blow valve like before. And i only get 0.5 bar boost on my turbo whereas it was supposed to be running at 0.8 bar (where i have set using the evc4)
help....!! anyone know wat's going on with it?

help me pls.

 

I'm not too sure, but it sounds like you have a boost leak.... Check all of the piping coming from the y-pipe and then from the intercooler to the elbow. The couplers on the stock piping are very frail and are subject to leak. That is atleast the first thing to check....