HThe effect of popping doors is more of a help to avoid reaching in over the window to open the door.
Unless you are looking to impress the public and have em lift all the way.
I have the 100s installed. See my video (Twizy funk) how the pop up.
I have strengthened my stopping rubbers by pushing a fuel line piece through the hole of the rubber. Roel's brilliant idea!!!
Remember, the higher the days temperature the stronger they get.