Catch Can Routing....

[CarlC]

Some LS engines, like mine, do not have a valley cover engine outlet. The LS6 in the Camaro has an engine exit on the opposite side valve cover.

In any case, as Don notes:



1) Fresh air from after the filter and after the MAF (if the engine has one) but before the throttle blade routed to a valve cover inlet, typically on the passenger side.
2) Dirty air engine outlet to the PV200 inlet. Dirty air can be from the valley cover, drivers side valve cover, etc.
3) PV200 outlet to engine vacuum (after the throttle blade.)