What are the main items included in car modification?

[Stephanie]

In general, car modifications mainly include the power system, chassis upgrades, control systems, exterior and interior modifications, among others. There are more than a dozen items allowed for modification, which are sufficient for ordinary car enthusiasts. It is recommended to stay at the decorative level because performance upgrades will always change various parameters of the original car, more or less damaging the frame and suspension. Engine modifications: intake system, exhaust system, fuel supply system, crankshaft and connecting rod mechanism, valve train, compression ratio, turbocharging system, etc. Chassis modifications: braking system, tires, rims and wheel covers, suspension, anti-roll bars, etc. Electrical equipment modifications: ignition system, headlights, signal lights, decorative lights, etc. Body modifications: body kits, sunroofs, spoilers, stickers, etc. Interior modifications: trim panels, seats, car appliances (water dispensers, refrigerators, microwaves), etc. Safety device modifications: anti-theft devices, reverse radar, safety warning systems, etc. Entertainment and information system modifications: audio systems, car hands-free kits, walkie-talkies, car GPS, car black boxes, etc. Off-road vehicle modifications: protective bars, roll cages, off-road tires, off-road lights, winches, etc. Generally, upgrading the power starts with the exhaust pipe, in the order of the tail section, mid-tail section, and full section. If the full section is replaced, it usually requires upgrading the computer program as well, and of course, upgrading the catalytic converter. Then comes the intake system, which can be replaced with a "mushroom head" that allows more air intake. Major manufacturers' accessories also include vehicle-specific intake air deflectors. Additionally, you can add or replace intercoolers, oil coolers, blow-off valves, etc. For higher requirements, you can replace the turbocharger, expand the cylinder, etc. From the simplest addition of reinforcement parts to upgrading stabilizer bars, wheels, tires, and then replacing shock absorbers, brakes, etc. The first step in chassis modification should start with choosing a suitable good tire. Tire modifications are nothing more than widening, reducing the aspect ratio, and changing the tire material. Unless there is a significant increase in horsepower, simply widening the tires by 10~20mm is usually enough to handle more aggressive driving on general roads without changing the steering characteristics and suspension load. The fastest and simplest way to change the car's appearance is to add aerodynamic kits. The so-called aerodynamic kits, commonly known as body kits, basically include the intake grille, side skirts, rear bumper, and rear spoiler (tail wing), etc. Good kits usually reduce the car's speed, making it perform more stably.