F1 2021 Whine/Turbo sound in older games possible?

F1 2021 The Game (Codemasters)
Does anyone on earth have clue how did this guy get to get effect of hearing transmission whine/turbo sound while accelerating, he did it in F1 2015 which is impossible to me.


I tried myself to find a way, like hex editing the bdl file of the sound engine, but I did nothing but changing the pitch of main engine.. He also called it the 'ERS' sound test, which means he did it for ERS and not for the main engine? This is out of ordinary how did he do it?
 
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