T3 is very hard to get right.
You're not wrong, T3 is extremely technical and 80 percent of the lap, in terms of importance.
23.181
28.640
Using 6/9 BB, No AS, ABS 1.
1st corner requires hard steering, and practically full throttle, ride up the mound on the left as tight as physically possible, and then exit with 2 wheels on the grass on the right, turning the wheel reasonably hard, then opening out once on tarmac, may require lifts along the way, seeing 168km/h+ down the short straight means you've nailed it (saw 170 once and a .9 T1)
2nd corner brake down to 2nd gear at 93-95km/h and proceed to avoid hitting all inside rumble strips/cobble stones for the remainder of the lap (except for the chicane 1 corner after T1) Even the most minor touches spells disaster for exit speed, or you will only reach a similar exit velocity to that of a non rumble strip contact effort, therefore you will suffer a net loss as your entry speed will be poor in this situation)
3rd corner stay in 3rd, brake tap, glide a bit, and power out at just under 100km/h. Very important to be smooth when exiting (in general), with the steering wheel, If you're too fast exiting, no amount of extra turning of the wheel will help the cause, open out the steering lock reasonably early as it's an FF car.
4th corner, brake down to 115km/h, glide momentarily, power out 110km/h, avoid the inside stuff.
5th corner, brake down to low 120's, the limit I think requires a slight lift as you enter the tunnel as close as possible to the wall, at around 112km/h, avoid loosing track position is key.
6th corner I don't brake but commence a glide at the appropriate moment, 113-115km/h depending on line, you can gamble by cutting it ultra fine with the wall and you receive this extra bit of grip for some reason when you land, but difficult to time.
7th corner, brake but don't immediately downshift to 2nd, wait half a second, then power out at around 91-92km/h, avoiding using too much exit rumble, and especially no grass, compromises line and exit speed.
8th corner, 3rd gear, position car significantly over to the left before the jump, not all the way, but enough so that all that is required is a momentary lift once you land, accelerating out in full throttle ideally, I lifted slightly exiting because of carrying too much speed and lost a bit of speed at the following right kink, you should see 154km/h If you have ideal speed.
Hope it helps, more splits to come as T3 wasn't brilliant, although sector 2 is completely maxed out at .6xx.