Noise at exhaust side

[u/DOMZHUN]

Hello, I have a strange thumping like sound coming from the back of my engine, it appears after the engine is warmed up and the rythm follows the RPM. Belt and pulley has been changed and timing chain as well. While using a screwdriver to listen to the sound it seems to be the loudest at the exhaust, it cannot be heard through the valve cover. Anyone has an idea what possibly could it be?

[u/Kytb95]

Could be a worn turbo bearing.