Please do not clicking the "return" before contacting us.We are professional,responsible, when you encounter a problem we always to help.We always reply ebay messages .And commit you 100% satisfaction guarantee.Function:Its role in gasoline injection systems is similar to airflow sensors. The absolute pressure in the intake manifold is measured according to the load conditions of the engine and converted into a voltage signal or frequency signal,transmitted to the ECU with TN as the basis for determining the fuel injection quantity.Description:100% newMade from high quality material which is Durable, not easy undamaged.Work high efficiency.Easy to replace to save your time, instruction is not included, Professional installation is.