I created a tool to change the volume of the sound described in CarVSTConfig.xmb. Please try using it. Download link : TDU2_SVR_ver126.96.36.199.zip Install: - Please save the file generated after extract zip file in a suitable folder. Usage: - Fill in the file name in the "Target ..." field - When you click the folder shape icon, the file selection dialog is displayed. You can also enter a file name by D & D a file. - Either "CarVSTConfig.xmb" or the sound file "xxx_high.bnk" can be read. Note: Reading the sound file xxx_high.bnk may take some time as compared to reading the xmb file. - After changing the value of the element, click the "Save" button to save the value. - After saving, "HH-mm-ss_MMM-dd-yyyy_file name" file is created as backup. Thank: The information of this post was very helpful. I thank the contributor.