The new slider continues the trend of giving you more control over your simulation experience. However, over the years we have also been receiving feedback that the whistling sound may be too difficult to bear for some players.
Indeed, many players commented very positively on it. We did our best to tune it properly based on actual in-cabin recordings. When we introduced a separate channel for turbo sound some years back, it was hailed as a crucial enhancement to the simulation. One of the changes you can find is the addition of the Turbo sound slider in the game's Options screen.
This includes, but is not limited to, improved interior cab sound mixing, Western Star 49X truck bug fixes, and improvements, and other changes in preparation for new and upcoming content. GENERAL BUG FIXES/SOUND CHANGES1.39 also features various bug fixes, improvements, and an update to sounds.
