I have a 1991 dx that i put a d16z6 (its actually a sohc zc vtec) into. I am currently running it with a homemade vtec actuator and a dx intake manifold and ecu and a modified dx distributor and my stock dx ecu. I know that the fuel mapping in my ecu is not substantial for vtec. I have the d16zc intake manifold and a 1990 si computer. what else do i need to complete the swap? Any comments will be greatly appreciated.