60 FPS

Last update: October 24, 2021

Cheat originally made by asasega. I ported it to more game versions and expanded it with more features.

An improved 60 FPS cheat. I expanded it to re-enable tire smoke effects and the rear view mirror, originally disabled for performance reasons when running the game in Hi-Fi mode.

WARNING: When this cheat is in use, existing replays will break.

Setup instructions

US NTSC-U 1.1 US NTSC-U 1.0
EU PAL
JP NTSC-J


Simulation timescale in Arcade

Last update: October 9, 2021

American and European versions of Gran Turismo have a weird difference to the original Japanese release – in those Arcade Mode is noticeably faster than the Simulation mode. I investigated it and found that in these versions, Arcade Mode runs at 125% speed, although naturally without speeding up the in-game timer. With this code, Arcade Mode is restored to 100% speed, just like in the Japanese version of GT1.

A clip from Submaniac93 illustrating the differences well:

Setup instructions

US NTSC-U 1.1
EU PAL