GBOD REMOVED!!!
You can see blue stock injectors here:
Follow these steps in order to remove and replace injectors.
1. Remove this bolt that holds a fuel line (bolt shown below is facing towards front bumper). Once you remove this bolt, you will be able to lift the fuel rail slightly to be able to remove stock injectors.
Optional: two 12mm bolts that are holding the fuel rail might be difficult to start the thread; one option is to remove FPR which will give you more space to work around it.
2. Once again gently lift the fuel rail with your hand and use your right hand to slowly pull out the injector. Sometimes o-ring may fall out while pulling the injector out. Once injectors are out, install pink injectors.