There are many valuable explanations above. I might just add that you need to pass last turn as good as possible in order to clock good time on split 1.
I am assuming that you are using my setup.
I don't remember what degree I was using when I was create that set but since you have Momo you could play "Wheel Turn Ratio" adjustment primarily.
This adjustment works like this if don't know yet;
First, adjust the "Wheel Turn" to 270 (for momo).
1 is linear, means, the wheel you see in the car is moving in a same degree with your wheel attached to desk at the middle areas.
0 is non-linear; car wheel is moving more than you turn in all areas.
You may choose 1 or 0 or in between (better). Test it to find sweet point.
If you want to continue in technical side, keep reading.
If no, above suggestions are enough to improving to some degree IMO.
Technical aspects:
You need to consider weight transfer issue and try to work on this.
After you figure out what happening during braking which is one of the most important thing IMO, you will understand how the weight transfers to the front than sides and
how this movement affects braking performance/suspension setup and overal performance during entering the curve.
Evaluate your performance with 3 sections (plus preparation stage) while cornering;
1. Preparation
2. Entering
3. Middle (apex)
4. Exit
And ask those questions while you cornering the most critical curve on the track -it will be the corner after the long straight on BL1 (lets call it T2) in this case;
1.
Preparation: During the slow down (prior the entering stage) are brakes locking and you are missing the line and so apex?
if yes> Try to lover brake pressure and/or consider little early braking.
2.
Entering. Let say you managed slow down perfectly and enter the curve, is car understeering/oversteering? (I assume that you are using whole track, means far left to apex)
if yes & if its understeering maybe your wheel input is too fast. Try softer input. Decrease the speed and work on this without reaching your maximums.
Oversteering (OS)> Normally it should oversteer in a degree. All the fast sets are little oversteers, you can try it. The thing is can you manage this OS? Or is it a problem for you?
If you want more grip at the back there are few things you can do. First,
LFS Manual is full of info on this, quick check list included.
Few tips: For correcting oversteer;
-Soften rear dampers or harden front dampers.
-Decrease rear tire press. or increase front tire press.
These are for "entering".
If you are experiencing OS at the middle of the curve you also have to consider the anti roll bars (ARB).
Note: Since OS and US (understeering) are the opposite concepts, correcting one of them will likely increasing other.
3.
Middle. Anti-roll Bars effects the car performance in the middle section.
BL1/XFG combo ARB: I have seen many setups and I made many, all I can say that rear is between zero and 30-35 and front is max. 60-70 N/mm.
Note-2: Consider the performance on other curves while altering the adjustments.
You have to adapt yourself to different curves with their characteristics with small flaws. I mean, if you adjust the set for T2 perfectly, what about other curves?
That's why adjusting the car for a specific track is little tricky and sometimes frustrating.
First you need to understand what is going on than you can take corrective action whether it is adjusting or just practicing & improving the driving style.
4.
Exit. Evaluate yourself while exiting; is there OS or US?
XFG tends to US generally on exits, so this is normal in a point. If its too much for you than you can try;
-Harden the rear dampers (or lover front)
-increase rear tires pressure (or decrease front)
-Sometimes decreasing the front ARB little could help.
Note-3: If you decide to modify setup;
1. Make a copy
2. Try one adjustmet at a time
3. Perform the new test as close as previous test (important).
And RELAX
Enjoy.