Depends why you want the remap?
if you wanna drive it like a sports car....Ummm... go buy a sports car.
if you just want to experience of how the car 'should' feel when towing up hill, then just maybe...?
As Charlsey said; sort out all the basics first. do your EGR and your Intercooler flush, de-marmite the intake tract, then come back to the thought.
It does worry me when my girlfriend properly boots it...
I start thinking about early TD5's with 'Plastic Dowels' holding the head in line...!!