Sounds like good results from the process then with better driving and better MPG. Did you get any power figures? What size engine is your car by the way and where did you end up getting it done? Any new pics with the wheels fitted?

Don't know much about the sensor they refer to, you should find out more and ask on here about it cos you'd hate for them to be taking the hand.

As for the turbo, not sure either but I'd imagine a few hundred for a recon one with some sort of exchange service for your old one wouldn't be too far away. As your car's only 2 years old though I'd have thought it would still have plenty of life left in it, even with the remap. I'd have the same kinda fears, about the added strains increasing wear and tear, but I suppose you just kinda need to put it outta your mind, otherwise you won't be able to enjoy the upgrades over the constant fear of somethign going wrong!

Also, being such a new car, does this affect any sort of warranty you have/had?

if you decide not to fit a green panel filter then try a k&n like i have. its the same one for an RS/ST/TDCI! i got mine from ebay for £20...long cylindrical once. cross reference the part numbers to make sure it fits.