I will add more thoughts on this as time goes on, and i play with these for a few months.

For now just a simple photo comparison, take from it what you will.


How far the ram housing comes out of the gun. You can use the lpr gauge as reference.

Stock



Evil



The assemblies side by side




The Rams



Notice difference in diameter



The valves



Valve springs



Bolts. Evil, Voodoo, then Stock



Notice the evil is a flat faced bolt, and also the venturi design is at the back rather than up front



Of the three, The evil is the only one with detent slots in the bolt. Notice the voodoo does not have an oring up front like the other two. Somthing else you may notice is that the stock bolt has orings around the area the air will flow through, the Evil instead of orings has a raised portion of delrin, and the voodoo has nothing.




Thats all for the moment, i got cut short when typing this. Ill add some more when i get time. Post up if theres something specific you want to see

Good info and pics. Still like NDZ more though

cool comparison, curious as to why theres no o-rings on voodoo now

I have never had any issues with o-ringless bolts in an Impulse. Especially since force fed loaders were introduced. Blow back really isn't a huge issue like it used to be.