anyone ever took out their rear diffuser?
how hard it is to take it out?

Rear air difuser? Not sure what you mean here... could you post a pic of what you mean? And why do you want to take it off?

the one that is below the rear bumper

it is made of plastic and coloured black
joined both exhaust tip

a bodyshop says they need to remove the entire rear (bumper tailight and spoiler) to remove that rear diffuser

i'm just curious if it's true
anyone ever tried to remove it?