Firmware for the car GAZ (GAZ) 33104 Valdai,
Control unit: Bosch EDC7UC31,
Software version: 765V110_GAZ_245. 7_33104_901281C000_S1 GAZ_33104 VMS1 0000412723VMS3 VMS4 VMS 5,
in the firmware, the EGR valve is disabled and chip tuning is made with an increase in power and torque by 15%. You can remove the connector from the EGR valve.