This is a Tool Assisted Speedrun, for information on what a TAS is visit: http://tasvideos.org/WelcomeToTASVide...
Q) Did you try and trick off the ramp before the mushroom cut?
A: Yes, but it was slower from my testing.
Done on Dolphin 5.0 (Stable) with TAS Input, Savestates, Frame Advance and TAS Code.
Do not re-upload this anywhere else without permission.