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In this article I will show you how to code fuel injector for direct injection turbocharged engine BMW N54.And at the end of article I will put the video guide,if you need to know more detail,it better to watch the video.
*A laptop installed BMW INPA software.
Step 1:Connect the K+CAN cable to the vehicle and laptop.
Step 2:Launch the BMW INPA software.
Step 3:Tab the “F9” to select BMW E90 classify,then software
Step 4:Select “Engine”–>Double click the “MSD 80.0 for N43 N53 & N54 with EWS4…”
Step 5:Then it show the German manual boxs,Select “F9”
Step 6:Tab “Shift +F4”
Step 7:The screen show the engine valve and the other show the fuel.
Step 8:Tab the “F1” to coding for injector 1,and enter the value “58.2” and “2.27” and then coding for others injectors.
Attention:Those values are stamped on the injectors during the manufacturing process. The injectors contain a piezo electric element. Due to the differences in conductivity of the piezo crystals, each injector has a slightly different tolerances when it is manufactured. All injectors go through a testing process in the factory and their measured tolerances are stamped onto their casings. When you replace injectors, you simply tell the ECU what are those tolerances.
Thank For 
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