Intalled EN-VALVE this evening. I plugged the original pcv valve at the valley pan. The EN-VALVE fit into the breather grommet in the passenger side valve cover. I connected this to the manifold vacuum port at the base of the carb. Everything seems to be working fine. I did notice that my idle speed dropped about 100 rpm. I'll have to re-adjust that. A quick ride showed no difference in performance. I also confirmed 3" of vacuum at the oil dipstick tube at about 1200 rpm.