I understand this and i am very capable to under go what is required to install STi cams but considering that this process will run aprox $320 and a set of used STi cams go for around $200ish and the power still dives hard towards reline (just not ad bad as the WRX cams). I would rather spend a few extra dollars and go with something more specific to my build without buying a new set of BC cams for a grand.