How to replace the banshee engine sound with an custom Viper RT 10 engine sound

[Augur89]

Hi,
i'm trying to replace the banshee engine sound in gta 5 with real Viper RT 10 engine sound for the upcoming Viper Mod and could need some help:

I've exported the banshee engine sounds file (supercar_8_us_v8) with openIV to an .oac and replaced the files.
i tried to keep all settings like in the original files.
→ bitrate, frequency, format, duration, filesize, sampling rate, bit depth, channels are all the same.
starting sound, idle sound, deceleration sound, stopping sound. all sound good ingame. just the acceleration sounds like crap ingame.
Here's a link to the files: https://drive.google.com/file/d/1olABcx3uBICBA1NWKv2omS5Ze3Rfe8Kd/view?usp=sharing
anybody got an idea, what can be done to fit that?
is there any trick to fix it besides keeping all parameters like the original?
thanks in advance