Swapped my ECU to get it ready for a CA Smog Test. Along with the swap is disconnecting the battery which re-sets the OBD's availability to read, "ready."

Two years ago I put about 100 miles on the car to get the ECU "ready."

This time, after 200 plus miles I couldn't get it in ready mode.

I found these two articles on-line and did a combination of both and finally was able to get it ready to read and ultimately pass.

Its always been said, swap ECU's drive about a 100 miles etc. to pass emissions. With these protocols, it may be as easy and logging 20-30 miles.

http://epa.ohio.gov/portals/27/echec...dinessInfo.pdf

http://www.obd2.com/support/reprog/d..._procedure.pdf