Just leaving this here:
In F1 Challenge 99-02, a modder called Luigi70 was leeched too. Here are some of the measures which F1C uses against leeching:
Reduce the number of polygons of your cars and tracks as much as possible: in F1 Challenge '99-'02, the sky is the limit when it comes to F1C's FFB update rate. F1 Challenge '99-'02's Force FeedBack loop is tied to the refresh rate. In other words, the higher is the FPS in your game, the better will be your FFB. One of the best ways to increase your performance and driving sensations in this game is to have circuits with as few polygons as possible. In F1 Challenge, the quality of modeling is achieved by having the best possible model using a minimum number of polygons, with a quality that is consistent with the contents of the original video game. When these models are attempted to be exported to higher-end simulators, the shortcomings will become much more clear and this will discourage the purchase of many of these people.
Use 1024x1024 resolution textures or lower: When modeling vehicles, 1024x1024 resolution textures should be applied only to the chassis. Textures below 1024x1024 are acceptable in F1 Challenge '99-'02, but in today's sims, it's another story. The original game uses 1024x1024 textures very sparingly, only on vehicle models, other areas of the chassis, and specific terrain areas of a circuit. The great advantage of F1 Challenge '99-'02 is not only that its modding processes are the most efficient and fastest of any simulator known to date, but that everything can be converted to F1C without any complaints related to quality.
The Armos way This consists of locking all your MTS files for EVERY SINGLE mas file you use within your SeasonData folder, then create a new fake MAS file without the models. The true one should be hidden with a fictional and unrecognizable format. Very few people know how to do this, but I will also point out that
this is the least effective way, because hidden pseudo files are easy to discover and unlock. The same goes for the locked MTS files. Nevertheless, is effective against people that don't master the English language and lacks the necessary specific tools and knowledge to do the reverse ARMOS way to unlock. This method also makes you suffer some sort of "rFactor2 syndrome", with every locked and put in such a way that new updates for your mods will be done at a much slower pace, losing F1C's saving grace as a videogame and racing simulator.
Extra tips: The most effective way to diminish leeching without harming the community in a game like F1 Challenge '99 -'02 is not done just by going private modding, but by offering a better mod than leechers do with all their gameplay features covered under permissive rules of use and exemplary ethics of its creative team, reducing the graphic and polygonal quality to the minimum standards (seen above) for the maximum benefit of fluidity and realism. Excess of quality in inappropriate areas such as 3D models or lack of it in key sections such as gameplay or consistency of physics often leads to content theft, regardless of the empathy (or lack thereof) of the person doing it.