I'm a noob on BMW tunes, how does Procede compare to Cobb and JB? I know JB is a box you unplug before going to the dealer, is Procede the same? I have CPO for a few years and don't want to chance anything but I'm open.
2015 Raven Scion FR-S
2010 Black Sapphire Metallic 335i - Sold
2006 Quartz Grey Audi A4- Sold