Thanks for all the positive feedback guys!
If you are going to glue these on to your car you are going to have to apply preassure while the glue does its jobb.
Iv'e seen some DIY removing the bumper and using clamps to hold the splitters but I just used a strap on each side with a soft cloth between the strap and splitter. Adjust the strap to hold the splitter firmly in place and wait 24h. very easy installation..