I am waiting for a 2013 STI and have been looking into upping the performance, but before I go down that road I would like to thoroughly understand the components in a forced induction vehicle.
I've done a bit of reading but I'm still confused as to the difference between a blow-off valve and a wastegate. These two components seem to do the same job ie. prevent too much boost/pressure from being created. From what I understand, the bov releases air if the psi gets past a certain point and the wastegate prevents exhaust gases from spooling the turbine past a certain pressure. Am I missing something? I'm sure I am... Could someone please clarify for me?