I just bought a Del Sol si with a JDM SiRII b16a swap.

The vtec won't kick in though.

The Check engine light codes out #8 (top dead centre sensor) and #41 (o2 sensor). Would #8 really prevent VTEC from kicking in??? I am pretty confident that #41 wouldn't really affect it.

 

someting is disconnected, google up vtec solenoid images and trace the wires.
replace O2 sensors and do a tune up. u can use SOHC O2 sensors i think

 

Probably the Dizzy. Or since it is a swap after all, they might not of wired in the VTEC solenoid and if its running on OBD2 the CKF sensor might not have been hooked up.

 

usually when it throws the tdc code its the dizzy