The Demon II is a hardware refresh that is replacing the original Demon for all USDM/EDM large box ECU NepTune RTP packages.
-This sleeker unit is more stable when installed.
-No longer requires a battery for data retention.
-Comes with the TunerView Data Header and Analog Input header pre-installed.
-Features a ferrite bead onboard to help reduce interference.
-Two USB ports so you can decide whether to cut the ECU case or not.
*JDM ECUs will still need to use the original Demon unit for fitment.

Contact your local dealer today!