.kp will be very very hard to generate. EVC (in their infinite euro tuner style wisdom) decided to use a proprietary, non-portable, inconsistent binary only format. I doubt they will ever document it. I doubt it is even possible to document it.

a2l is possible, but would require a bit of work.

the .xdf format is pretty self explanatory, its basically an xml file with a few obfuscated tags (which I can help you with if you run into problems)

You can load it with just about any xml parser.

The tricky part is outputting into a2l, which, unfortunately, I do not know that much about.

You'll have to find a2l syntax documentation.

I've been meaning to make an a2l generator but since the format isn't well known to me i haven't gotten around to it.

If you have COMPLETE a2l files (as a reference) you can upload them here and I can take a look.