Super Nitro for GTA SA is finally a thing after all this time, now you can enjoy using this mod like you did in GTA VC!
How does this mod work? Sit in any car and press the forward arrow + attack button — the button with which the car goes forward, and the button with which you fire weapons.
How to install:
Install CLEO and place the CLEO folder in the directory with the game, you will also need CLEO+ you can get it from here.