I have recently tried to equip my Ariel Atom with twin turbos I had already bought but every time I try to it doesn’t install them.
Buy a new ariel atom. It’s the only way to solve the problem.
Then, before you download tunes that are not yours - make sure you have every different kind of aspiration conversion. If you do not and the downloaded tune contains an aspiration conversion, you may run into the issue you have now.