I personally would be removing the remap, as increased power from an engine an will reduce its life.
The engine in the FL2 seems good for about 200k miles, as long as it's been maintained well, and doesn't ingest a port deactivation (swirl) flap, or an M6 flange nut off the EGR pipe.
When I was looking for a FL2, I rejected any spec below an SE, then those that had body damaged, interior trim wear, or drive train faults.
Look out for whines from the back of the vehicle, as the rear diffs are made of cheese. Also the PTU can give issues, probably because no oil changes are specified.
Check for rust on the rear suspension components, and grinding brakes under heavy braking. Make sure the steering is silent when turning the steering, and look for fluid leaks where the PS pipes join the rack, as these get corroded due to muck being thrown at them from the RH front wheel.
I also look for identical tyres all round, as it gives an indication that its been maintained on the cheap, which is a good guide as to other things may have been neglected in the past.
Good luck.
Can I ask, what price it is?