For those who are having trouble with grand valley sector 3.
- go manual shift, you will start this on 5th gear
- hard brake right before the 100m mark and drop to 3rd gear, in the 1st corner (the tunnel one).
- go pressing and releasing the throttle while doing the 1st corner, leaving the tunnel on right side of the road.
-no need to brake on corners 2 and 3 ( the left corner after leaving the tunnel and right corner after that). Just press and release throttle. Try to go as near as possible to the pins on the side of those corners.
-after you leave 3rd corner, full throttle, up to 4th gear, up to 5h gear and pay atention not to hit the wall on the tunnel right before finish line.
-even if you do this well, you will still need some tries but you will eventually get the gold.