Strange boost leak? funny noise!

[doogle-d turbo]

Made a gasket for inlet and tightened all the pipes up but still no boost and still high pitched whine. It's annoying that u can't tell where it's coming from without driving the car.

I think the 13m nut at the bottom of the inlet is loose but was impossible to access without exhaust and turbo dropping.

Does anyone have another trick to getting to it without messing everything around again?

Then the other area might be where the pipe joins to the intercooler as the pipe is at more than 90 degrees ???