This is a sound mod I made for the Rollovers Vantage GTE. If you have that mod, for the sound to work properly I have included a "data" folder that will update things like rev limiter, idle, drivetrain and other things. These are the necessary steps to update it:
Use Assetto Corsa Car Tuner to create a new tune for the car, name it "rollovers_vantage_gte_rework". Then go to that car's directory and replace the data and sfx folders. That's it!
I haven't tested this sound with other car mods, but it should work if the engine rev limiter is at 8000RPM, and the idle is at 2000RPM.
Sound sources are Nicki Thiim, 19Bozzy92. MattyB727 and Drivetribe. All credits to them.
Enjoy!