I downloaded a tune for my current car (2013 Mazda MX-5) and later decided to build my own setup for that car. The tune I downloaded had the “Conversion > Aspiration Conversion > Centrifugal Supercharger” installed.
When I went to build my own setup on the car, I attempted to install the Supercharger, but noticed it would “uninstall” itself immediately.
I am not aware if this bug is specific to this car or a more widespread issue but I felt I had to report it nonetheless.
Buy the car again then go to supercharger, buy it and save the tune. Then go down load the other tune u should be able to use the supercharger now, Its a known glitch .
It is a bug that has existed for several games now and it appears T10 have no intention of fixing it - can happen to any car when you install some one else’s tune.
Since we’re discussing “forced induction” related bugs, I might add my two here though not related directly to the OP’s issue:
No change in HP after making turbo upgrades
SRT Hellcat transmission whine (initially had a few folks confused with the supercharger whine) is too loud in replays; even after the car is off in the distance, you hear the tranny whining like it’s right next to the camera.