Home >> Volkswagen >> 2002 >> GTI Base, Standard >> Repair and Diagnosis >> Engine Mechanical >> Blowers, Superchargers & Turbochargers >> 1.8L - Turbocharger, G-Charger - AWD, AWP, AWW Generic (A4 Platform) >> Turbocharger, G-Charger >> Boost Pressure System, Checking >> Boost pressure regulation, checking >> Test requirements