Excitebike (NES 1985) Game Genie Codes

SXXTYUVV - Never overheat
YEXIKOYA - Recover fast after crashes
PEXIEZLA - Reduced enemy bikes in game B
AAUSEYAO - Timer runs at half speed
GAUSEYAP - Timer runs at quarter speed
ENUKGEAP + GESGPALA - Turbo speed on 'A' button
EVUKGEAP + TESGPALA - Mega turbo speed on 'A' button

- Excitebike @ Wikipedia