I too have a Mass Flow EFI. If you are sucking down a quart or so of
oil in 500 miles and your cam has a fair amount of overlap, there is a good chance that your mass flow meter will get
oil on the wires. If so, it will through the meter off quite a bit.
If you can see the rocker arm with the PCV pulled, your missing the baffle. Then the next question, is there enough rocker clearance to put the baffle in? If not, you will need taller valve covers or will need to modify the intake to mount the PCV there.