<<Sounds great, actually, although
I am not sure what it does.>>

What the chip does is:

-remapps the timing curve
-change the injector pulses timing and duration
-starts out rich then leans the mixture to correct ratio (Stock VW starts out lean then enrichens)
-eliminates the hesitations at @2400 to 2500 rpms
-improves bottom end power
-improves throttle responce- no delayed reaction
-increases power with ratio rockers 10% or more if other modifications are made to the WBX engine.

The company that developed it had some engineers that worked on the orginal chip to help develop it 5 years ago.

Robert