hey guy first post so gimme a break lol, I just got a 32 gtst w rb20,ok first thing is I plumbed the catch can properly ie t'd the pipes on the rocker covers and ran that to the can and the other pipe to the pcv, now its sucking air from where the dip stick is, to the point its still sucking when the engines turned off I know vaccume is good but geese, also its having trouble idleing, it revs erraticly sometimes and pops and farts, it has an exhaust leak at the dump would that do it? Any help will be appreicated, cheers.