I do almost the same. This is based on the graphics in the original GP3-2000.
Break really late, at about 50 meters from the corner, and don't break 100% cause that will make your nose drive and overload the front tyres, and you will get heavy understeer or snap spin. Break something like 40% strength and use the gears to do the rest of the breaking, dropping into the low revs in 3rd around 180kph. Then hit the throttle but don't accelerate just yet, just hold the speed until you are close the exit-point, then gradually squeeze the throttle until you hit the apex of the second turn, at full throttle gearing up into 4th. The hard part is having the nerve to break really late and light at the entry, and accelerating at the right time, so you don't get understeer. A good rule of thumb would be to begin to accelerate the split second you think that chassis has regained its balance from the turn in. Or as Cai puts it:
"For the bends always overshoot the apex so you can get good acceleration on the outside of the bend. I think we mean the same thing here."
Then comes the brake zone, and that is just as tricky. Brake hard, wheel dead center to avoid locking the right front. Let go and then funnel the brakes the rest of the way and keep it going while you turn in, hitting the apex at about 115 kph and be careful not to slide to much to the left. A short burst to 140 kph, followed by a slight brake to 115 again and turn in while you hold the accelerator to keep up the speed. Remember to hug that kerb! As you approach the kerb at the exit you should be at around 130, floor it and aim for the beginning edge of the billboards.
Turn right real fast as the track turns in , and let it slide to the left side as close to the grass as you can come. It is all to easy to spin if you are in the middle or the right side of the tarmac. You end in the mid 3rd gear, but if your 3rd is 8 notches or longer, it can't cope with the uphill gradiant. Make sure it is short enough for good acceleration. Break at the end of the marshal entry gate, about the same way as you did with the other righthander, but remember once again to keep you wheel total straight or you will lock your right front. Turn in at about 95 and drop to 80 kph as you hit the apex at the right hand kerb, and slowly increase throttle to you hit the exit point at the left side kerb.
At the exit point aim again at the beginning edge of the billboards, and floor it once more (might get a slight bit of wheelspin here, and if you are to slow at the exit you will spin when you floor it), entering the left hander at 180 kph, hold it there for a slight sec (or if your setup allows it, take the corner flat out) and floor it again, as you exit just at the edge of the tarmac to the right. Keep it going hitting top 4th (doesn't pay to gear up here), and break hard @ 60 meters before the corner, and funnel the rest of the way thru so you hit the apex at about 130 kph, and then floor it again. If your setup is like mine your rear will go lose and you will slide all the way to the kerb on the other side. As you hit the kerb shift to 2nd and the reduced torque will let your rears pick up traction once again and you will be point straight down the track for a clear run uphill.
Again the trick in the final corner is:
"For the bends always overshoot the apex so you can get good acceleration on the outside of the bend. I think we mean the same thing here."
Thats the way I took it tonight when I did a 1.15.593 on Semi-Pro with default physics and the default 810 bhp, no aids. Mind you that is without the added boost difference to the engine from Semi-Pro to Ace, so you should be able to do it even faster.
Btw, what spring, ARB and wing settings are you running?
It's only after we've lost everything, that we are free to do anything.