We have 2 cheats and tips on N64. If you have any cheats or tips for F-Zero X: Expansion Kit please send them in here. You can also ask your question on our F-Zero X: Expansion Kit Questions & Answers page.
When you complete ALL the cups in the Master difficulty setting with every character you will unlock a special ending where you will see Mr. EAD dancing.
At the 'Main' menu press L, Z, R, C-Up, C-Down, C-Left, C-Right, Start. If you have entered the code correctly you will hear a confirmation sound.