Hi all, sorry if this is a question thats beeen discussed already, i looked but couldnt find anything definitive, im looking at purchasing a out of state vx to be brought back to ca, 5 wire o2 wont pass smog in ca? How hard is the 5 wire to 4the wire mod? Costs? Thanks for any info
You should not hesitate on a VX purchase. CA or Fed, they're great in both configurations.
I think you should try to smog it in Fed (5-wire) mode with the contingency of changing (temporarily) to a CA ecu if you are not successful.
You can come by a CA ecu on ebay for ~$100. To swap it out, pull up the carpet on your passenger side, unbolt and unplug that little gold/silver box and swap it out for your new ecu. No skills necessary, just a little determination.