I want to spray (150 shot)but I think I need a purge to atleast let the pressure out of the lines after I am done. I dont have the instructions and was wondering if the 5177 dry has -4 or -6 to connect the purge to. I would assume -4 but just wanna be sure.

 

-4AN A purge is not neccessary on a dry shot but it's fun!
Hawk

 

my purge is fun, but you could purge into the engine during your burnout....