1: It takes some time to go up. Since this was implemented not too long ago, I cant tell how long it takes. I had to wait ~half a season (6-7 weeks) for it to go up.
2: You cant increase fuel tank research level, because your current (not potential) limit is at 0-10. So increasing it will do nothing.
3: You will have to get the knowledge of each part up (chassis takes longer to hit 100% than steering wheel f.e.) to 100%. Once that happened, the part will appear in the upgradeable projects list. If parts did not hit 100% DO NOT develop them! The parts will fail and be super heavy!
Any other questions, just ask here or in the chat. Chat will be answered quicker, because more people see it.
And, on a sidenote: Now is the time where you should start developing for next season. Dont forget the suppliers
September 14, 2018 10:47 am