Oreca LMP2 Setup and Data for the Le Mans Bugatti Circuit in Automobilista 2.
LMP2
The most interesting part on almost any car surely is the differential, which allows you to adjust the car in all potential cornering phases. 

Here I dialed it in so that the rear would rotate on entry, but just about not step out too much, while on exit you will feel it gripping up and pulling itself more to the inside. With more fuel, you'll likely want to check the balance and potentially counter the resulting oversteer with either a click of wing on the rear or lowering the rear ride height further. Other than that there should not be more changes from Q to Race, unless its hot temperatures and you want to go for the harder compound.

Le Mans Bugatti
Quite a different track to the normal Le Mans Layout. No long straight, but plenty of tight and especially long corners. Some open up, some tighten further. Patience is important here and paired often with very late or double apexes. Look for that in the comparison the most and you'll quickly find lap time. No need for harsh braking inputs as we try to keep the speed deep into the turn. Minimal braking helps to not lock the sensitive inside front. Perhaps you even want to dial the brake bias even further to the back. Its working the rear right tire a lot, so might have to switch to HARD compound for the race!

Driving

• Initial braking can be harsh, but needs trailing off the brake right after as the downforce quickly drops
• unless you throw the car in too harsh the car will be stable to understeer when coasting - that means you want to be back on throttle as soon as you are off the brake and the car will keep rotating
• TC1 is fine, but for ultimate laptime, turn it off for the fast corners, as it still engages too much

Adjustments

• start with the differential if any behavior is not to your liking. Less coast degree for more stability into the turn. More power degree for less oversteer on exit
• remove front wing if car is too aggressive in fast turns for you (unlikely)
• if slower corners are too sketchy, stiffen front roll bar (small impact), also more coast locking (lower degree or more preload) help here
• of course adjust brake bias to the front if car is difficult under braking, but I feel its already quite far forward

Fuel

In Q the car needs about 2.4 L per lap. Likely a little more in the race as the straights become "longer". Calculating with 2.5 per lap should be safe. 

For the race I'm expecting the balance to be slightly forward with fuel, so perhaps already account for that with the changes above.