but last night i found that both lines have oil inside... i was reading on the celica.org forum and they said to connect with a Y connector into the inlet of the catch can. then block off the throttle body and connect the outlet back into the plenum. with the link that CH45E that he posted above, there are 2 (dual) catch cans there, i'm guessing this would be the correct one as it stops any vapour getting into the plenum. therefore i was thinking to get the 15mm catch can instead of the 9mm one to acommodate for both of the hoses. then connect those again to the corresponding throttle and plenum. 430 is quite a bit of coin to spend... :(