hi hi ppl ~ i'm a dc2 tune D driver . . . my time on akina
downhill dry is 2"55'xx . . . well u just need to know the map and
your car well enough to know how fast u can enter a hairpin at and
how well your car can turn at different hairpins . . . main
hairpins to take note of are:
- hairpin before the S curve (the S curve is a good place to cut
time by speeding up since u don't need to shift gears, but if u
fail this hairpin, u will take time to speed up and lose alot of
time)
- hairpin before the 5 consecutive hairpins (there is a fairly long
straight to speed up after this hairpin)
- 5 consecutive hairpins (before the 1st hairpin, your speed should
be about 165km/h and you can enter the 1st at about 130km/h - make
sure u start braking then turning early ! and the rest about
125km/h ... )
- hairpin before the long straight towards the end of the stage
(can be completed at 5th gear with speed at 150km/h+, u can speed
up quickly and cut down time easily)
- hairpin before finish line (entering this hairpin at a high
speed, u should let go of the accellerator and turn hard to the
right and then start accellerating again)
well hope this general information helps! 
= s h a r i n g * i s * c a r i n g =