I am the owner of a 2001 Audi TT 1.8L 180hp with a AWP engine code

So recently my car started loosing boost pressure after it warms up.when it’s cold you can feel the turbo spool and build pressure and my boost gauge will show 10 psi but sometimes after the car has been driven for a while the car looses boost pressure it will only push 2 psi and nothing higher I have checked and made sure there is no boost leaks you can hear the turbo spool due to the cai but it never hits full potiential I am at a loss of ideas so I thought I would turn to this thread for a possible solution. Thanks in advance

forgot to mention there is no codes on the cel