pierburg valve and loss boost

[q4fatboy]

I know its my own fault.

Was checking all the vacuum pipes this weekend for loosness and removed the pierburg valve for checking. After replacement only .4 boost, dismantled and rechecked connections, cleaned all pipes etc still only .4 boost.

Any advice other than if it ain't broke don't touch it

[AlfaJack]

Try swapping the two pipes around, not sure if it will help, but that what I would do

[j1v]

[q4fatboy]

I did swap the pipes round and that was worse. I have got a length of silicon pipe so I am going to replace all the small diameter pipes and check them all out.