Passat 1.8T EMCS Software Upgrade Page The following is the list of the current software versions for your car. Simply download the programs and follow the instructions included with your EMCS programmer. For special programs, please contact APR. ECU Part Number Stage Version Number Date Released Download Here Notes Stock 91 93 100 Race 104 Race Valet 8D0 907 557 P 1 v3.1a 5/10/02 X All pre00 cars Y Y N Y N N 4B0 906 018 BG 1 v3.0 11/27/01 X Octane Specific Y Y Y Y N Y 4B0 906 018 BH 1 v3.0 11/27/01 X Octane Specific Y Y Y Y N Y 4B0 906 018 BQ 1 v3.0 11/06/03 X Octane Specific Y Y Y Y N Y 4B0 906 018 CL 1 v3.1 02/25/03 X Octane Specific Y Y Y Y N Y 4B0 906 018 CM 1 v3.1 07/12/04 X Octane Specific Y Y Y Y N Y