This is another common problem for RB26DETTengine,......... another one.......??? (+_+)'.
Anyway, intake throttle gasket blew out, this course of rough idle and leaking boost.
Even not so old car like R33 has problem like this, U...uuun headache.
Solution ???
Change to metal gasket.
Well ... just wait till drop engine off????
If you don't care...... haha.
