Re: KWP2000 software.?
I'd be very interested to know how you get on here, its something I have thought about myself. I agree with your premice that the tuners must get their maps from somewhere. Whilst I am sure the best guys tweak their own specific maps based on experience, there's no way everyone gets the opportunity to develop their own map from the ground up for every vehicle?!?!?
If it were me I would grab a few CD's from eBay and compare the maps in the first instance, between each other. If all 100 are the same, you know it's junk. Then I would try to compare the one for a specific car against a backup of a manufacturer ECU. If you can clearly see similarities just slight changes in fueling etc. then it bodes well... you probably do have to be prepared to waste a few quid on CDs though.
Have you got the KWP2000 interface? I would really like to know what parameters you can set on an Alfa (Bosch) ECU?