Carter,

I know you are trying to run a fun event however, this kind of challenge is honestly not a smart idea. Why?

I am guessing the boost level will have to be the same for all tuners correct?

Regardless the facts are:

Runing the motor lean is not going to kill the motor during this event, detonation due to too much spark advance will be the issue at hand.

Sitting on the sidelines while some one else tries to extract power out of a vehicle & simply monitoring the a/f ratios is not going to stop detonation, you can have a "safe" a/f ratio & still have knock conditions.

The tuner who has the vehicle first has the greatest advantage. Why?
Lets say the motor is put through several passes by the first tuner with so much detonation it causes enough damage to effect the power output of the motor... At this point the contest is no longer a contest.

The event will become more of a test of seeing how much abuse the motor can handle before a component fails such as a ringland...

In my opinion it would be a waste of time to run such an event.