Forge dumpvalve with chatter :s help

[shayne3k]

Thats my dump valve

 

[mr.jiggs]

Greese it up and clip the hose on the pipes using tie raps so you dont loose no pressure via leaks and it shud work better i did to mine and my car over boosts by bout 0.23 psi it shud boost to 1.6 bar but goes to 1.83 so makes enough diference so you can feel it

 

[mr.jiggs]

Ive recently put a twin piston dv on the evo and i have made sure all pipes and seals are in tact and there are no leaks but all im getting is the sound of a recirc dv.
Im boosting up to 1.2 bar and still no wooooooosh. Ive put a pic below of the setup. Any feedback or help would be greatly recieved.

The blue pipes

 

[mr.jiggs]

Unless im wrong but mines been done and its all good

 

[Dirtmatt]

Single piston DV won't give the same release as dual port. If you want to get it to dump at low pressure would say your going to either need a different spring or run something different.

Hks are good for dumping just about any boost.