I have a Hydra and the 02 sensor (wideband) unit fs. I have had the unit for only a few months. This has only been installed on the vehicle but never ran. Note, this is a full standalone EM, not a piggy back. I also have the w/b 02 sensor which hasnt been installed yet either. THis has AVCS control and anti lag. The hydra unit itself is $1400 new and the 02 sensor new is $325. I am looking to get $1400 for the unit obo.

This is for the WRX, not USDM STi. This works with JDM engines. THis was going to used on my V7 RA-C swap.

FOr more info go to: http://www.elementtuning.com/technical/element_ems.htm