High speed location

[BK]

 I just looked at two different schematics for plumbing a high speed lean out with an Enderle Cube and K style barrel valve.
 One shows it on the inlet side and the other shows it on the outlet side before the distribution block.
 I always thought inlet side was right but that doesn't mean it is.
 Is one preferred over the other?

 

[Spud Miller]

 At WOT, there's no difference in operation in either spot. I like it ahead of the metering valve so it can help relieve pressure when the throttle is closed at high RPM. Also, on a blown setup, the fewer hoses going past the blower belt the better in my opinion.

 Spud