Any updates from anyone with this issue? I just bought an 07' STi with both ons and a GrimSpeed AOS and I get blue smoke on a cold start and oil seems to be going somewhere because I bought the car and the dip stick bearly showed any oil. Added 2 quarts and it was a little over full. 2 days later and the dip stick isn't reading any oil again. Doesn't blow smoke any other time other than a cold start and no leaks anywhere. Not trying to highjack the thread but I think my issue may be similar.