Jb4/MHD N5x Custom Backend Flash

The N54 MHD+ Custom BEF Tune offers a comprehensive map tailored to your vehicle’s needs. Price includes 1 octane-specific custom map, (Flex adapt is a extra $105) remote tuning, revisions, log reviews, and full support/settings—all included for the ownership of your car. Should you need additional map slots, they are available for $105 each. Please note, this service covers custom tuning and maps only and does not include the MHD license or OBDII Adapter.