To reflash 2001-2002 Subaru WRXs with EcuFlash you need to have this connector plugged in first before plugging in your EvoScan 1.3U or OpenPort 2.0. You can leave this connector permanently installed in your wrx.
Note from customer:
I bought this Subaru 2001/2002 3pin connector for a JDM wrx sti 2001 but it did not fit. after closer inspection under my dash, the plug on my car matches the other Subaru 6pin 2003/2005 reflash connector.