Boost Leak

[Sirocco20348]

Hey guys,

Edit: I might give some context to this problem. I installed my front mount intercooler and had the system smoke leak tested by Alba European. He confirmed that there are no boost leaks and the car felt strong (20psi), butmade a funny whistle noise at full boost. I contacted Jimmy and he ensured I had no leaks, so i thought it must be air passing through the new pipes and created a whistling noise. (??)

Anyway as the weeks went on I went from a max boost of 20 psi to a max of 18psi and then a max 15 psi last week! Which made be want to action it. So i thought I must have a boost leak? Maybe?

Boost test:

• I fabricated up an attachment to connect into my TIP with a nitto attachment on it to connect to an air compressor.
• I set the air to be regulated to the minimum setting.
• I also unplugged the hockey puck and plugged the hole to avoid pressurising the sump.
• Do i need to do anything else?

Anyway I start the test, and I get a really high pitch whistle happening!!!! Similar to the sound i hear at full boost but a mega version.
I freak out and then unplug the nitto coupling which makes the big whoosh sound.

https://youtu.be/2821FhrB3lM

Please watch and if I am doing anything stupid please let me know....Does it sound like a boost leak somewhere?
I'm scared to do the test again in case I'm damaging something.

How do you regulate only a certain amount of air into system? Eg. I only want 1 bar of pressure for the test.