Ive been having a very irritating glitch that im not sure if im the only one or not. So when I download a tune for a car, and then later decide to take the tune off and build the car myself. If the tune that I downloaded had an aspiration conversion, i cannot put that on my car after taking the tune off. It says “OWNED” but when I click “A” to install it doesnt let me unless I re-buy the car, and with how broke I am that is a problem haha
Same thing happens to me. Unfortunately there is no way to fix it
This issue has existed in several of the Forza games now - only options are to buy a new car and start again and have all aspiration changes purchased BEFORE applying a tune.
In some cases in the past downloading a tune with the other parts in it would fix things but seems to be unreliable now. Several other threads on the matter (especially in the FM5 forums).