Home >> Audi >> 2001 >> allroad Standard >> Repair and Diagnosis >> Engine Mechanical >> Blowers, Superchargers & Turbochargers >> Exhaust System - 2.7L V6 BITURBO - APB, Bel >> Turbocharger, G-Charger >> Charge air pressure system with turbocharger >> Turbocharger and charge air pressure regulating valve, checking >> Requirements for test: