Upgrading from a 335IS to an M3 and no longer need my JB4 and DCI. It's been installed in my car for roughly 2 1/2 years and worked great with no issues. No damage at all and the DCI is just a bit dirty from use. This includes the JB4 kit, added USB cable, and DCI.
Purchased for $600 new, will sell for $400. Shipping in the U.S. only.