if i have the non vtec del sol S (d15b7) and i swap the motor to the z6 out of a del sol SI... after i swap the computers... do i need to change inything in the wiring harness? or should the del sol S already have the wires for vtec?

 

You will need to add the VTEC wiring. Search the Archives, there's a How-To on it.

 

wouldnt my car have already came prewired for vtec?