If you're into car modification, or even just watching car shows or online forums, you might have heard the acronym FBO being thrown around. FBO is an abbreviation for Full Bolt-Ons, and it refers to a car that has been modified with bolt-on upgrades. These upgrades are easy to install, and don't require any cutting or tuning processes to be performed. These upgrades are popular among car enthusiasts, and they help to improve the performance and handling of the vehicle.

The main purpose of FBO upgrades is to increase horsepower and torque, while also providing a more exhilarating driving experience. These upgrades can include upgrades to the intake and exhaust, as well as modifications to the engine control unit (ECU). They can also be used to improve the car's throttle response, and acceleration.

Some of the most common FBO modifications include a cold air intake, upgraded exhaust system, and an intercooler. Some of these upgrades can be done in combination to achieve the best results. These upgrades are also relatively inexpensive compared to major internal engine modifications. These upgrades are popular among BMW owners, and they help to improve the car's performance, handling, and aesthetic appeal.

One of the downsides of FBO upgrades is that they can void your warranty, and can cause issues when taking the car for maintenance. They can also reduce resale value. Some of these upgrades can also be louder, which may be a problem for some car owners.