What's broken!!??

[A3tell]

So on my way home tonight, something decided to go wrong with the car, lost a big chunk of boost!!! And also my usual dump noise from my forge 007p has now turned into more of a flutter sound!!!! Now I can hear a boost leak from somewhere, but where wld b best to start looking from the symptoms I av described???
Its a modified AGU 1.8t btw!!! Hope someone can help as got to take car to get windows tinted tomorrow afternoon!!!

 

[s3dave]

Check the actuator pipe up to the n75 valve, also the orange charge pipe..

 

[A3tell]

It's not an s3 so don't av a charge pipe! Also I have upgraded to a forge tip, so I hope noting is wrong with that, as bit expensive to replace that!!! It's just the flutter noise I get now instead of my usual dump from the 007p which is baffling me!!! Surly that wld suggest a valve issue???

 

[s3dave]

Ahh you still have a charge pipe, check under the car by the pancake pipe...

 

[A3tell]

Ok, but I have a fmic and I checked all that first!! Sounds like its coming from the back of engine bay somewhere!!! Am hoping it may just b a split diaphram from my oo7p, going to chuck my stock one back on n see if that sorts it!