that's why we are here... Sounds like it popped on sunday, you can't really tell it happened until the next time you try and accelerate and theres nothing, you push harder, back off and woooshhh... Do you have aftermarket gear or standard gear? Either way could have been any of the piping.. But for me it was usually the one on the front of the turbo and once it happened on the hot side pipes. The std rubber joiner that connects to the throttle body is known to split and loose boost. I changed that and a couple of other joiners and my car over boosted.. They are very small things but also very important.. Front bar off would make it easier and it doesn't take long. Good luck mate.