Bug

[marsh shuttle]

Not a bug, it says between 15-20% you did over 20%

[sonic pagoda]

I changed it, it doesn't make any difference

[silent island]

Ensure that the highlighted Tuned number falls between, in your case, 15-20%. In my example, I needed to tune this Jaguar between 5-10%, so I swapped out both Air Filters, upgraded the spark plug wires and the distributor cap.

[sonic pagoda]

Are you talking about that?

[silent island]

Yes. 35.95 is way above 20%. You installed too many tuned part variants.

[sonic pagoda]

Ok thanks bro 🤝

[median prism]

Add less tuning parts and don't upgrade them too much only on story missions.

[unreal pike]

In case you didn't notice, he received the solution already 18 days ago.😉