Unlock the following cards to get the corresponding effects.

Card 1 to 5: Engine HP L, M64 (S30, Porsche).
Card 6 to 10: Engine HP 2JZ, RB26 (Supra, Skyline).
Card 11 to 15: Engine HP 13B,12A (RX7).
Card 16 to 20: Engine HP 4g63 (Evo).
Card 21 to 25: Engine HP 13B,12A (RX7).
Card 26 to 30: Engine HP rb26 (Skyline).
Card 31 to 35: Engine HP vg30 (Fairlady Z).
Card 36 to 39: Body stiffness.
Card 40 to 43: Body weight reduction.
Card 44: Body stiffness.
Card 45 to 47: ECU tune for lower end torque.
Card 48 to 50: ECU tune for high end power.
Card 51 to 52: Scramble boost (overboost ability).
Card 53 to 54: Increase tire grip.
Card 55 to 56: Transmission upgrade.
Card 57 to 58: Suspension.
Card 59 to 60: Engine durability (slower rate to engine overheating and detonation).
Card 61 to 62: Transmission and suspension upgrade.
Card 63 to 64: Engine durability, tire grip, life gauge (SP).
Card 65: Transmission and suspension.
Card 66: Scramble overboost ability (max level 3).
Card 67: Unknown.
Card 68: Body stiffness, engine durability, SP.
Card 69 to 80: Engine swap cards (tune up stages 1 to 2 for each type).
Card 81 to 128: Various unlockable cars, character chapters, game modes, and other effects.