ok guys im lost and need some help. i have a 04 sti im pretty sure that my pcv valve the one that goes to the intake is blowing a unholy amount of oil into my engine bay ( were talking puddles) it dosent leak at idle or light driving wtih no boost but at wide open throttle it is spraying horribly i already replaced the old valve but im still lost and i think its still doing it. if anyone can help fix this or at least diagnosis for a bigger problem it would be appreciated.

 

If that is your situation take your STI to a Subaru Dealership ASAP.