Neptune RTP is a tuning hardware/software package for tuning OBD1 Honda and Acura vehicles developed by James Holy at HR Tuning.  Quality hardware, quality software and solid support combine to provide what is arguably the most comprehensive package available for tuning these cars.   More information can be found at the official Neptune site here.  The Neptune RTP software can be downloaded here.

Hardware Supported

Currently, the Demon 2 is the only supported hardware for Neptune.  We sell the Demon2+Neptune RTP setup.

Discontinued Hardware

If you have discontinued hardware, you can get current production hardware (Demon2) for half off with our trade-in program.  More details here.

The Demon (or “Demon 1”) is no longer in production and has been replaced by the Demon2.

Demon1 hardware

The original Neptune RTP board was designed by Moates.  It is no longer in production and has been replaced by the Demon2.

Original Neptune RTP Hardware