Lower bumper part removal

Front or rear?

They both need to come off to do the job properly, as for the front at least you need to trim the upper bumper to fit the new lower. There's a how-to on Audizine I think, or A4mods.
 
sorry james. both and just removing the lower fron the upper. also if possible whilst on the car

What exactly are you trying to do? Are you removing to refit a Gmbh valance or just swapping like for like?

You need to take the bumper off to do it either way really.
 
From personal experience you need to take the whole front and rear bumpers off to remove the lower sections.........