OBD FULL and Bench solutions for MERCEDES & INFINITI DELPHI CRD3x.x Magicmotorsport releases a new software version of Flex (5.24.0.0) for the complete reprogramming of DELPHI CRD3 engine control units equipped with TC1797 and TC1793 microprocessors in OBD Full and Bench modes. The new protocol for Delphi CRD3x.x allows you to work on the entire range of Mercedes engines (2.2D, 2.1D, and 1.8D OM651)