My girly and I just swapped a d16z6 head onto her 1992 civic cx. vtec and the 02 sensor are all wired up. upon startup her car revs up and down and has a horrible idle. reason why im asking is my next door neighbor's crx has the same swap and his car is doing the same thing and they just say it cant be fixed. we did clean out the iac anything else we should be looking to do to fix my girlys car?