Undertray, wheel arch liners & headlights then it just unbolts. It is also worth unplugging the front fogs and headlamp washers when the bumper is just loosened otherwise you end up sitting there pulling at it & wondering why it won't come off...............
Most splitters just bolt/screw up to the bottom of the bumper and/or undertray anyway so once the car is up in the air, & you can get under it, you should normally not have to take the bumper off to remove it?
Going to live with it for now, it's much better with the ugly tie rods off. If I decide to do away with I'll just chop through the bolts with a grinder, any scars on the splitter won't matter as it will go in the bin.
It's a Maxton, satin black, if I do remove it and comes off without damage I would offer it on here. Touring car style tie rods (if you like that kind of thing) are in good order but have no function so taken off, splitter stays perfectly in place without them presuming it doesn't bow down severely at speed.
Going to try it though my usual car park ramp, but if it scrapes I suppose it will gouge up bad, that'll be the decider.