Let's GO! I found the solution to the delayed sounds and made a better soundmod than the last 2. it has a rear downshift sound now and also upshift sounds for interior have been fixed and the int sounds are better now. of course the rear has upshift noises but i will still be developing this for the rest of 2022.
LET'S GO! I found an application to finally do the pitch changing effect I needed. I have no idea why the upshifting sound is delayed by a few hundred miliseconds, trying to learn how to fix it. Preview here!