As Joe said, we need it scanned for codes first. The reason is that it sounds like you have a few different issues. The whistle and lack of power could be a disconnected turbocharger air tube, the whistle would be boost blowing out of the tubing. However, that shouldn't have any effect on the SCBS system.
Quick test on the turbo tubing, if you are setting still and rev the engine up, do you hear the whistle then? If yes a good visual inspection should show the issue.
Tuesday, June 4th, 2024 AT 11:01 PM