Thanks for your reply, but unfortunately I'm not using any sound mods at the moment (I have 2 SH3 installations, one stock patched to v1.4 and one for GWX).
The sound annoyance is with my stock SH3
I do use some interior texture mods but not any sound mods.. any ideas ?
From the game's options, which one lowers the engine sound ? Is it the "FX" one ?