This is an evolution of my old 488 GTE sound mod, but with many new samples and improvements. Just install and enjoy.
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The recommend audio settings inside AC:
Engine: 10
Everything else: 5
The recommend audio settings inside AC:
Engine: 10
Everything else: 5
I wasn't aware of that. I actually set the upshift range exactly like real life. Anything below that would sound like the GTE car rather than GT3.
PM me and I can send you a modified version.