got one apexi power fc taken out yesterday .. upgrading to hks f con v pro for my RB engine.. if money is not the issue.. go for hks f con bro.. but find a really good tuner.. n sorry if i dont answer your question..
I bought a second hand VAFC & comes with an installation manual. Tried to install it but unfortunately, the mec/tuners need the ECU diagram to link the VAFC with the ECU in order to control the MIVEC openings...