Hello and good morning dear Opel friends! Now after a long illness I get back a bit patched together again… I had explained my “bird chirping” then and now I have to realize that it definitely comes from the turbo. Under load the sometimes chirping. Hose and clamp sit but reasonable and tight. On normal country road rides you do not notice the “performance loss” either. But with highway rides when you go on the gas, there comes nothing and in the next moment he marches again, as bitten by a tarantula… Can this lie on the air mass meter? Or is this all a combination of the turbo? Then he really torments himself with high speeds up to 120 or 130 and then is the end?!? In the next moment he goes 230 again?!? Thanks for your help! Greeting Joe