Using this Trainer:

Launch the trainer first, then launch the Game and then Press F1 at the Main Menu.

Listen for "Activated".

Press desired option key

Options in Promo:

Numpad 4: Mega SP

Options:

Numpad 1: Freeze AI Cars

Numpad 2: AI Cars Spinout

Numpad 3: AI Cars Fly Up

Numpad 4: Mega SP

Numpad 5: Mega Bank

Notes:

Numpad 1: Freeze AI Cars - while in the races, toggle on to affect AI

Numpad 2: AI Cars Spinout - while in the races, toggle on to affect AI

Numpad 3: AI Cars Fly Up - while in the races, toggle on to affect AI

Numpad 4: Mega SP - while in the Main menu, where you can see your SP, toggle this on and then enter the CAREER, and then TEAM menu.  Note that the SP will not appear to change.  Toggle back off then enter a RACE and then end the RACE and come back and your SP is large.

Numpad 5: Mega Bank - while in the Main menu, where you can see your SP, toggle this on and then enter the CAREER, and then TEAM menu.  Note that your BANK amount.  Leave the TEAM menu, then  toggle this back off then enter the TEAM menu again, and note the amount is larger.