I have been having some trouble in the Formula series races. My F090/S is of course, not tuned to its best performance. I need a Professional Tuner to give me the best tuning options. Help is greatly appreciated.
Searchy! "Formula" as a search in GT3 forum gave lots of results.
Post #6 in this thread has my setups for all of the F1 cars in GT3 that I won that series with.
I won't claim they're the best settings ever, but they certainly worked for me, and the F090/S was definitely my favourite of the the F1s in that game.