Excellent looking product. I just installed my dual pop and safc and was thinking it would be so much easier to have a cheaper unit (over the safc) that would take the two signals and add them then input it to the ecu. Its great to see someone finally making easier options like this available. I might have bought it if I didn't already go this the SAFC route.
The greatest advantage is the plug and play ease of install. Secondly, keeping it simple with less electronics, less intrusion into the oem wiring. I have nistune myself so all I needed was something like this.