Those plastic pipes are hard, that's why there are sort rubber bits at the switchover valve, just pull straight away from the valve, gripping the rubber .

originally the rubber bits had clamps to prevent them from blowing off under heavy acceleration .

Remember : you need to connect the boost pressure gauge at the ALDA and no where else so you'll get the actual amount of pressure reaching the ALDA....

? Did you suction test the ALDA yet ? .

__________________
-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better