I hope no one thinks I'm being disrespectful to the master, it's certainly not my intention and my garage is what it is thanks to Praiainos. He's made the game so much better and I wish PD would find a job for him.
That said, I think I have a better McLaren GTR Sardegna tune. I'm not keen on the 200kg of ballast as think it detracts from the cars strenghs on the brakes. It's also bad for tyre wear as well as fuel consumption. I understand why it's there as it allows for more power, however you need more power to accelerate the greater mass, and if you have to turn down the fuel map you're not getting that power. My tune looks terrible if you only look at the power figure, but, I think it will be quicker under race conditions for most.
Fuel map 2, 1 stop race at end lap of 8 with no tyre change. Cange gear just before/as the rev display starts to light up (c. 5,750 RPM). Medium turbo and normal gearbox. After first stint you can slightly overfill and make more of the power, especially up the hill.
I had a poor run with traffic and didn't get in the low or mid 1.35s, which I can, but can't be bothered having just raced Praianos's tune and then gone back to mine.
Hope it helps someone.