I have some information on this unit that might be useful to those who have an aftermarket headunit and are using the Maestro Idatalink RR or R2 which the difference between the 2 is that the R2 is bluetooth so it can be flashed via bluetooth. If you have the Maestro are you aware that you can adjust the amp gains and even more features ? They don't send instructions with the Idatalink device for some odd reason. If you have this unit and need some help with some issues...i have learned a good bit about this unit by having some frustrating moments. It's a great unit but can be a true pain.
