I put a 94 d16z6 into a 93 base model sedan, the engine wouldn't run properly with the 1.6L throttle body, it ran good witht the 1.5L TB because it doesn't have the map sensor on the TB i used the map sensor on the body of the engine bay. any ways u need to use th e1.6L TB When u wire vtec but the the car idles really funny and throws map sensor codes , and I discouved the car was missing three wires outta the same plug I wire wired the vtec wires into. The colour of the wires it was missing was blue/green which runs to pin D21 SG1 and pink/white pin D17 Map and yellow/green Vcc1 pin d19. Because every other civic I looked at has these wires, but this car doesn't. Unless are the sedans wiring harnesses different, because I found these wires coming outta the ecu but led no where to the engine bay.