Product Main Features: 1. Shorten the response speed of the electronic throttle 2. Improve the electronic throttles sensitivity 3. Plug and play without external power supply 4. 5 modes: Comfort mode / Sport mode / Racing mode / Economy mode / Original car mode 6. Super bright LED digital display screen Product Function: 5 Modes ( Each Mode have 9 Levels to Adjust except Original Car Mode) as Below: Comfort mode:? Accelerate the throttle reaction speed, start faster, accelerate the flow. Sport mode:? Increasing instantaneous acceleration and improving over bending performance, achieving better speed increasing effect. Racing mode: Excellent acceleration performance is achieved, as if the car were racing on the track. ? Economy mode: Can get the best fuel economy car, fuel-efficient about 8%.? Original car mode: Revert to original vehicle mode.