Vacuum System (Biturbo)

Fig 1: Vacuum System Components Location (Biturbo)

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Vacuum system (biturbo)

1	Change-over valve for switching valve (Serv. No.: 1971)
2	Coolant pump (Serv. No.: 1950)
3	Change-over valve for coolant pump (Serv. No.: 1950)
4	Bypass flap control box - cyl bank 1 (Serv. No.: 2167)
5	Bypass flap control box - cyl bank 2 (Serv. No.: 2167)
6	Boost pressure control cycle valve (Serv. No.: 2193)
7	Vacuum reservoir
8	to air guide pipe
9	Switching valve (Serv. No.: 1969)