hy...how can i improve my time at bl1 xfg in 2nd split....from 2 weeks i started to do fu**ing time ....in 2nd split and good times in 1st split...and 2 weeks ago...the situation was conversely...good 2nd split..bad 1st split...i need help!!!what should i do...take a break?

Use the curbs, brake as later as you can.

In XFG small slides cost you time. In slow corners you usually slide on exit and it's usually understeer. In fast corners you usually slide going into the turn and it's usually oversteer. You lose huge chunks of speed, well relatively, with a small slide in the turn after the long straight, split 2. There you need to come off the brakes as early as you can, but focus on car balanse and no sliding, focus on the rear wheels, make sure they stay on the limit(or close) but not over it.

OT: In turn 1 in first split, the focus is on the exit where you want the front wheels not to slide.

Quote from IDUI :

In XFG small slides cost you time. In slow corners you usually slide on exit and it's usually understeer. In fast corners you usually slide going into the turn and it's usually oversteer. You lose huge chunks of speed, well relatively, with a small slide in the turn after the long straight, split 2. There you need to come off the brakes as early as you can, but focus on car balanse and no sliding, focus on the rear wheels, make sure they stay on the limit(or close) but not over it.

OT: In turn 1 in first split, the focus is on the exit where you want the front wheels not to slide.

I was saying the same, but i add one more thing.
If your hotlapping/singleplayer or why not even in multiplayer,
heat up your tyres. Speacially rear tyres so much that those are green.
That means right away more grip. And thats means better times.
After that, you can brake later, get better apex and exit speed.
Mainthing is, that fwd handles better if your rear-tyres are at right temperature.