Sure, I can help you create a car simulator game with JDM cars and modifications using HTML, JavaScript, and pictograms. Here's a starting point for the game implementation:
This is just a basic template to get you started. You can further enhance it by adding race tracks, off-road areas, multiple players, and more. You'll need to build the game logic, handling collisions, implement multiplayer functionality, and add more features based on your requirements.
Remember to replace the car pictogram drawing with actual images or more detailed graphics to make it visually appealing. Also, consider optimizing the code and adding proper game mechanics for a smooth gaming experience.