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[TheBoy]

Switch on engine, let it run for a mo, then switch off. Wait 30s. then unplug the vacuum at the flap solenoids (vac reservoir side of solenoid this time, not actuator side). You should get a significant hiss, proving the vac system is holding a good vacuum...

[nigsey1600e]

Hi

i have allready tried that by mistake when i changed the pipes round on the front vac res i changed them back over after a short run to see if there was any differance (not that i could tell),  when i changed them  back over  again to there new posisions there was a good hiss for about a second or two so that must be a good sign that the system is holding pressure anthing else i could try?

i have read some where that the multiram only operates under load is that perhaps  why i can not see the system working? but still the engine does still seem alot down on mid range grunt compared to my last one

[TheBoy]

There is a post in FAQ or Maintenence Guides that is an extract from Vx v6 manual that explains when valves open.

With the help of this, you should be able to see the flaps moving.

Or get a Tech2 do the valve test to see them move - but thats expensive and lazy  

[nigsey1600e]

 i think i have read that post is that the one marks_dtm  included? that  made some sense,

perhaps my system is working  because when i give it some wellie there  is a big change in the intake note ie a big roar or is that just normal,

 i have the tis 2000  gismo but not the tech 2 reader how much do you charge for tech2 testing

[TheBoy]

I am less than half the price of a dealer for tech2 diagnosis, depending on what you need doing. But multirams dont need tech2 to test really

Bear in mind that rear one should be open at idle and closed mid range, that one should be easy to see. The front, you need to blip the throttle up to around 4k...