.After you have exited the first tunnel, break as well as turning right. You will see the car turning pretty well, as soon as you can see that the car is at a good angle to make it through the tunnel without slowing down at all, floor it.
After exiting the next tunnel, make sure you are really close to the wall, so that when you exit this tunnel your left hand side wheels will be in the middle of the grass and the white line heading in a straight line to the dip up ahead, once again, dont make the wheels screech doing this part.
Once you get to the dip. As soon as you hit the dip with your front tyres, take off the accelerator, not for long though, and then apply full gas trying the very least for the tyres to screech while going around this left hander. You shouldnt be going out to the far rubble strip, while turning this left-hander. If you do go out to this rubble strip, your time wont be as fast as it could be.
From here, it should be pretty simple getting up this hill.
Hitting this split, stay close to the right-hand wall and slowly move toward the middle of the track before exiting the tunnel. Where the shadow of the tunnel is on the ground, you should, in this order turn full left, tap the break a bit, releasing pressure of the left control as you are going around this corner to stop the tyres from screeching. After this corner, it is pretty easy from here on.
Let me know how your times are?