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on a direct injection model the vacuum pump outlet is a steel pipe pretty much directly under the front on the intercooler coming up from the right side of the motor. From that steel pipe there is rubber tubing that if you follow this tubing it runs around and along the intake pipe back towards the air box. Then it goes under to the vacuum solenoid ( this has three tubes an an electrical plug on it). To install both dawes and needle valve all three ports you need to block off. And just next to the solenoid is the air resonator box with one port. This port needs to go to one side of the needle valve.
Now on a crd, its exactly the same but the cacuum pipe is on the left side of the motor.