i am talking about the blue flow reducer closest to the intake elbow. Not the one way valve by the vaccum port on the manifold. The larger valve out of the two.

 

keep it, it keeps from putting too much vacuum to the opti

 

alright I put it on and even used a vacuum gauge to the other side of the valve and there is vacuum, but once I hook the hose to the opti and then take the 90 degree fitting out of the intake boot there is no vacuum. Only there is vacuum at the intake boot is when I dont use that fitting.

 

You are saying that you cannot get vacuum through the right angle fitting that connects at the intake elbow, but the hose up to that point has vacuum?

 

Yah like in this pic

http://shbox.com/1/opti_vacuum_hose.jpg

that filter flow reducer there is vacumm after that going towards the opti, but I connect that to the opti like it suppose to and and the other hose comes from the other opti spout that goes to the intake elbow. Well that is where I get no vacuum. So I thought well maybe something by the opti is plugged so I took off the reducer and hooked it all back up and tested and there was vacuum. So maybe that filter is plugged to the point by the time it reaches the opti it looses it vacuum. Whereas using nothing there is no restriction. So i dunno

 

Put it all together, but leave the hose unconnected at the side of the intake manifold. Use a hand held vacuum tester and see if you can draw air through the system. Make sure the blue valves are pointed in the right direction as attached to the hose.

 

okay did and no vacuum, I recplaced the filter with a smaller red electrical splicer connector and I tried and had vacuum. But now I just tried and seen that the filter flow reducer has a metal plug with a pin hole size on the one side of that filter. I took that out and it flows better. But what is the point of having a pin hole size to blow through no wonder it has a tough time pulling vacuum through it.

 

...because it is a flow reducer. Too much vacuum can cause damage to the opti.