Pretty self-explanatory achievement, but ... (!)
In your garage you can select an already installed upgrade part (Boost, Tyre, Engine, Gearbox, Suspension) and game will give the possibility to "Scrap upgrade".
Press
to do so. You will notice that the scrapped upgrade part, doesn't go back to the available upgrade parts to be installed (above the circle). It just vanishes.
So, once you made scrap of an upgrade unlocking the achievement, press the Xbox button (
) then press Start button (
) and chose to quit out.
Reload the game and the previous scrapped upgrade part will still be installed on your car, and you'll still have the achievement as well !!
Any suggestions to improve this guide are welcome.
Thanks for voting thumbs up if the guide was helpful.
Good luck!