It looks like to get a car registered it will need to pass the emissions requirements of the donor car as well as show receipts for a new catalytic converter, oxygen sensor, and charcoal canister. Has anyone used a charcoal canister and the purge valves? I assume I will need to make the tank non-vented (to atmosphere) and find a way to use the tank pressure sensor. I suppose I could build a circuit to emulate the inputs required to satisfy the monitoring test on the ECU. Just wondering if anyone else has dealt with this yet?