Home >> Volkswagen >> 2003 >> GTI Base, Automatic >> Repair and Diagnosis >> Engine Mechanical >> Blowers, Superchargers & Turbochargers >> 1.8L - Turbocharger, G-Charger - AWD, AWP, AWW Generic (A4 Platform) >> Turbocharger, G-Charger >> Deceleration Shut-Off Valve, Checking >> Test requirement