A new ROM editor for Virtua Racing Deluxe. Found a lot of stuff to edit, so had to make 4 separate tabs/pages:
This page (above) lets you edit the performance of your car. You can adjust engine power, handling, etc. You can edit the handling so that your car can take turns at full speed if you'd like.
This page lets you make changes to the CPU cars. You can adjust the top speed of all 15 CPU cars (these adjustments last for the entire race). You can also adjust how fast they are at the very beginning of the race. Using lower values will slow down all of the CPU cars when the race starts so you can get a better position. Setting the value low enough will allow you to get into 1st place. This adjustment only lasts for a few seconds at the very beginning of the race, then the CPU cars go back to their normal speeds.
Here you can adjust things like how many laps, how much time you get for races, how much bonus time you get for passing check points, enabling the "Mirror" tracks (race tracks backwards), etc.
You can adjust gear ratios here, as well as how many gears the manual transmission has. There is also a set of gear ratios in the ROM that are never used in the game. You can copy these unused gear ratios over to any of the 3 cars and then go test drive them to see how they work.
You can download it from my site (The Code Hut), or you can get it from RHDN with a full description: https://www.romhacking.net/utilities/1697/