(this maybe a bit late, but) Yep, I have a Celtic map on my Bora.
All their maps are custom, in that they take a read of your ECU and modify that file rather than just load a generic map on, so it's completely tailored to your car.
Have a look through the testimonials on their website.. I've tried a few 'other' tuning brands, and Celtic are the best by far - purely because they can map your car to exactly how you want it, and their customer service is spot on.
They also now have a Bristol branch, www.celtictuningbristol.co.uk
As for wear, my Bora's done 103k - it's perfectly fine.
Bora ST 1.8T - remap, Forge 007p d/v, TT Comps, H&R coilovers, Recaro interior, Aero wipers, much more to come!
www.celtictuningbristol.co.uk - passion for performance