I recently purchased a 2015 f150 Lariat crew cab 2.7L eco boost. I had the grill changed out and the dealership had to replace the leather on the passenger side dash. After I got it back, there is a air sucking sound on the driver side whenever I press the accelerator. Of course, as usual, the dealership can't hear it (the body shop guy and the service writer can, but not the tech) I even had them drive a new one... Exact model and you couldn't hear that air sucking sound at all. I took it to another dealership... Both techs hear it, but says it's the way the turbos sound. (Turbos wine but don't sound like an hair leak) Does anyone have any advice or a similar issue?

Thank you!