My motor came with one of the purge control solenoid hoses disconnected. It had a white T-fitting (aftermarket) inserted and was hanging loose. For reference, I will post the differences between the USDM and JDM purge control systems.
As you can see, the JDM setup is much simpler. According to IA Performance, you can delete the purge valve on a USDM and convert it to JDM with no Ill effects. The hoses on the purge valve are known to come off occasionally, so this might be a solution for those running USDM setups.