Pitch leveling/manipulation for car engine Ramp-up effect

[Trebor]

… how did you manage to do the ramp up correctly …

Ramp-up the speed on the time-track to ~103%, then back down to 100% …

if you could expand a bit more on it? Im guessing the spectral tool was used for filtering or smth, but the pitch seems to go flawless this way …

Then you have to brighten & darken a lot of little bits of the spectrogram, using Audacity’s spectral-edit tools,
to blend-in the spectra so the are more of a match …