Home >> Audi >> 2025 >> S4 Premium >> Repair and Diagnosis >> Engine Mechanical >> Blowers, Superchargers & Turbochargers >> Turbocharger, Supercharger (6-Cylinder Direct Fuel Injection 2.9L; 3.0L 4V TFSI Engine Ea 839) >> 21 Turbocharger, Supercharger >> Charge Air System >> Charge Air System, Checking For Leaks >> Tightening Specifications