Wear at the inboard end of the boost regulator bore in VW/Audi 01M, 01N and 01P units can reduce the ability of EPC/TV pressure to stroke this valve open. Full boost exiting this valve combines forces with the main regulator spring, increasing line pressure. The Sonnax oversized boost regulator valve kit allows the valve bores to be refurbished.
Symptoms:
Cause: Wear at the boost regulator bore can cause low line pressure.
Correction: Recondition boost regulator valve bore for improved boost oil control.
Wear at the inboard end of the boost regulator bore in VW/Audi 01M, 01N and 01P units can reduce the ability of EPC/TV pressure to stroke this valve open. Full boost exiting this valve combines forces with the main regulator spring, increasing line pressure. The Sonnax oversized boost regulator valve kit allows the valve bores to be refurbished.
Content:
SONNAX Installation Instructions