I had this on my turbocharged 1996 Mazda Miata, took it off when I switched to an AEM FIC unit. This is a complete kit including the Greddy E-manage, both cables needed, and the support tool/software.

The support tool alone goes for 120$ + shipping online. Look at this as a great way to tune your car on a budget. Asking 175$ obo Located in Oshkosh WI (Pick-up only for now).

 

I put mine on ebay and had a lot of luck and got like $275 iirc.