Hi I've just bought a MK1 2.0d Sport too, I've been looking around the net and it would seem the ECU on the 2.0d can't be remapped, looks like Mazda have locked it somehow, I called CelticTuning and asked them and they said they can't remap it, which is a shame as everyone I know who has a TD engine'd car gets them remapped by them!
I've done a bit of digging around and all is not lost, do a serach for chipexpress on Google, they offer a plug in solution which gets very good results, its a pretty impressive looking piece of kit, has a good warrenty and is adjustable from 171bhp to 195bhp with a large boost in torque and an increase in MPG, they are setup for each different engine (unlike cheaper ones which are one size fits all), you can even have them re-programed if you sell your car and buy a different one!
I am defo getting one when I have a spare 360 quid!
