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Dreamer,
I think I'm the one that gave Dave the idea I meant completely tune the car on the road when what I meant was after getting a base tune you can tune it pretty easily at the track where you have real loads, temperatures and cooling. The WBO2 system usually costs about the same as two to three hours of dyno time, and you get to the same place. So yes, you answered your question--the real value of WBO2's is to facilitate tuning. You don't NEED a WBO2 on a N/A motor after you get the fuel and ignition maps close. However, on a serious blown motor, it's cheap protection in the event you lose fuel pressure, etc. For a serious motor like you describe I would still recommend a WBO2. It's like having your own dyno.
Mike
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