I swapped an engine H23 to H22 on a 93 Honda Prelude with Auto Trans. H22 jdm engine H22 ecu H23 harness H23 distributor & coil 1 H22 water outlet, 1 H23 water outlet H22 exhaust header with matching pipe I bought (flange mount problem) H23 a/c H23 alt H23 ps H23 belts I really am looking for a H22 harness but am using my H23 harness right now. That is why I have the H23 distributor & coil in because the vtec is not wired and I couldn't see how the plugs could get spark because the H22 does not have a coil. The car starts but the rpm builds up in a hurry and I have to turn it off. Until I get the H22 harness I thought I'd put the H23 ecu back in and see if the rpm problem quits and it will idle. Any comments on what I did here?