@@luismejia9134 ok will fmod file are different from the ones we us to use. Explain went making a truck are a sound mod are any other mod went export the file from ATS real engine and sound tool if you could remember we could go in the Def file sound file engine chassis etc and tweak the files you wanna like sound mostly. You can't do that with the fmod sound file are anything to do with the fmod software ok I try it and tweak the new kriechbum 3.6 sound the n14 engine brake from 2.0 to 0.2... and bro the game not even recognize the file anymore I have to download back the original file over again so don't mess with it you will lose the file completely