Extreme off-roading requires a truck or Jeep that is equipped for the job. In addition to physical modifications such as fenders such as open fenders, suspension lifts, or even tube doors, your ride may perform better with the addition of a performance throttle body.
Whether you’re rock climbing or desert racing, a throttle body can give you an edge and help you get the most from your engine setup. Does your truck or Jeep need one? Learn the main ways it enhances engine performance and you decide.
1. Improves Airflow to the Engine
The throttle body on an engine controls the amount of air that flows between the air filter and intake manifold and then enters the engine to aid combustion. The part consists of a butterfly valve and some sensors that are connected to the accelerator, opening when the accelerator is pushed.
A performance throttle body is larger and wider than the OEM body on your truck or Jeep. Due to the wider diameter of the tubes, activating the throttle body allows more air to pass through the manifold into the engine, increasing its performance.
2. Improves Overall Throttle Response
Because performance throttle bodies are larger and wider which allows more air to quickly pass through, the result is a faster response when the accelerator is pressed. When only partly opened, the valve can let air through faster than the standard part as it must open further to let the same amount of air through.
More power is created at lower rpm's, leading to a faster response from the engine. This equates to a vehicle that will respond more powerfully and quickly when the gas pedal is pressed.
3. Produces More Engine Power
Performance throttle bodies produce increased engine power by letting more air through the manifold at one time. This happens because more air entering the engine allows more fuel to be burned faster to produce more power.
The sensors within the manifold increase the amount of fuel entering the engine based on the amount of air entering to produce a peak air-to-fuel ratio, usually 14:1. Higher air-to-fuel ratios improve combustion rates, which increase the power generated by the engine.
If you are thinking of adding a performance throttle body, know that keeping the air-to-fuel ratio correct is critical. Any imbalance one way or the other will result in a reduction in combustion and loss of engine power. Too much fuel allows unburned fuel to pass through the exhaust system while not enough fuel starves the engine.
4. Improves the Performance of Other Engine Mods
An additional benefit of adding a performance throttle body is how it can improve the achievement of other performance parts by delivering more air to them. Superchargers, turbochargers, performance air intakes, exhaust headers, and even some engine sensors will all perform better when they receive more air. The combination of all these improvements can really increase the amount of power your engine can generate.
While a performance throttle body may not be an important modification like fenders, open fenders, or tube doors if you only trail ride or do more casual off-roading, when you need engine power it is a great choice.
Your off-road truck or Jeep will have more power and be more responsive when rock climbing, mudding, and certain types of off-road racing where both power and speed matter. In the right combination with other mods, you can get the engine performance you need from a performance throttle body!