A friend of mine owns a 99 Civic Si. not too long back he blew his motor. He purchased a replacement, but for some reason they sent him the b16a3 from the del sol. his car ran fine for a good week or 2, now it seems to have no power gain at all, especially where vtec is supposed to kick in. could this have anything to do with the obd 1 -> obd 2 wiring ?