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reading the cars its compatible with, it only seems to do the 1.9 TDI's and none of the others
 
you just have to hope that you don't lock out either ECU when you do it

then again, the way some of the forum members are willing to go to unknown people on ebay/web who just buy these same tools (which are hacked/cloned copies) you'd think they didn't care about their car
 
Personally I'd leave well alone.
If you want a remap go to a professional.
Very easy to wreck your car, but damned expensive to fix it.

Regards Guy.