1. you dont pay more for the plates each year
2. Autogauge is the brand on the B pillar
3. The Ems 8860 is not a plug-in the only plug in computer apart from the standard is the Apexi PFC, the PFC is Rare to find these days................The ems Excceeds the Pfc in all aspecs i think
Every modification you do to a car need engineer Cert., and will be defectable.