I covered mine with vinyl film, so I only removed the long center ones. For the dash and door pieces, I just applied on top without removing them. Overall it was a 1h job :-)

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2011 BMW X5 35d 265HP 425TQ - Now with K&N & JBD Tuned !
2007 Audi Q7 3.6 280HP 266TQ
2000 Saleen Mustang 4.6 Supercharged 510HP 490TQ